When does conceiving a child begin? Signs of conception by day

The female body is a unique mechanism for reproducing new life. The process begins with the growth, maturation and release of the egg. When, how, and on what day after ovulation does conception occur, videos with expert advice will help you understand this issue. Let's consider the features taking into account the opinions of experts.

When does fertilization occur?

Before calculating on what day of ovulation the egg is fertilized, remember that the cycle is ideally 28 days. Neither 21 nor 35 days are considered a deviation. In any situation, the second half of the rhythm is an unchanged value and takes 14 days, necessary for the rehabilitation and preparation of the ovaries for the reproduction of a new cell.

In the first half, the cell matures, then breaks the membrane, is released and enters the reproductive tract. This is the time when it is better to carry out fertilization, but it lasts only a day, so it is important to be able to identify it. It is easy to determine this date mathematically when the process is cyclical: from the total number of days you need to subtract 14, the constant second phase.

Thus, fertilization occurs at or slightly after ovulation. After all, the cells live for about 1-3 days, continuing to move along the genital tract.

Possibility to plan gender at conception

Experts note that by correctly setting the day for sexual intercourse, you can predict the sex of the embryo. It is determined by the sperm that has come into contact with the female cell (X or Y).

From the anatomy course it is known that cells with the Y chromosome are very fast, but with a short life period - no more than a day. Therefore, it is not difficult to guess on what day after ovulation a boy is conceived. A female cell lives for a day or two. Therefore, sexual intercourse is necessary exactly on the day of her release.

The second type of sperm with an X chromosome is very hardy, but slow. They can easily last up to 2-3 days, sometimes more. But they won’t be able to keep up with fast Y cells. This means that you need to time the act at a time when the cell is not yet there, so that before it appears, all the nimble Ys will die. Using simple calculations, it is easy to determine on what day after ovulation a girl is conceived: a couple of days before the follicle ruptures.

When to expect conception

To plan gender or to speed up the pregnancy process, it is necessary to understand what day after ovulation fertilization occurs and when the cell is released. For this purpose you can:

Use the calendar method - mathematical calculations.
Measure temperature rectally and make a chart. The curve will show a decline and growth, which indicates a rupture of the follicle.
You can use tests that determine the desired day using urine or saliva.
Add your feelings to them.

Knowing the exact day, we understand on what day after ovulation conception occurs - by the duration of its viability period, which lasts 24 hours. It is clear that fertilization occurs on the first day after ovulation. After which the fertilized egg does not stop its path - further towards the uterus. This journey to the site of insertion into the endometrium will take about seven more days.

Signs of conception

The first characteristic features of pregnancy appear after a week. Implantation may be indicated by slight bleeding caused by the implantation of the fertilized egg into the uterine wall. As a rule, this is a few drops of blood or just a brown smear on the underwear. There may be pain comparable to menstrual pain, as well as increased urination.

Additional signs: malaise, drowsiness, fatigue, irritability. They are caused by the perception of the embryo as a foreign body. The body will need time to get used to the new state.

We draw conclusions from our article regarding on what day after ovulation conception and implantation of the embryo occurs:

You need to understand the principles of calculating your cycle and your ovulation day. For a more reliable result, observation should be carried out over several periods.
The release of the egg can be confirmed by any of the additional methods (tests, ultrasound, etc.)
To give birth to a boy, sexual intercourse should be scheduled on the day of ovulation, and for girls – 2 days before.
Conception is possible at any time after ovulation, but no more than 24 hours.
Embryo implantation occurs after a week.

Thus, it is not difficult to determine on what day after ovulation fertilization occurs if you know certain rules.

The fertilization time of the egg is limited; it must occur within 12 to 36 hours from the moment it leaves the ovary. Next, the egg loses the ability to conceive, and gradually leaves the tube by the time of menstruation into the uterine cavity, which has already died.

For those planning the conception and birth of a baby, it is important to remember when fertilization occurs after ovulation. From the moment the egg is released from the ovary during ovulation. She needs to be fertilized within two days, then the egg ages and cannot produce a full-fledged embryo. Therefore, doctors recommend making love in order to conceive a baby in the period from two days before ovulation and two or three days after it. This is due to the fact that a man’s sperm retain their viability under normal conditions for up to 3-5 days. They will need a few more hours. To overcome the obstacle of the cervix and the body of the uterus, entering the fallopian tube and heading towards the egg. Many sperm die in this case, leaving the way for the healthiest and hardiest ones.

When does fertilization occur after conception? Actually, at the moment of conception, fertilization of the egg by the sperm occurs, the fusion of two cells, in fact, is the starting point of future life. On average, after sexual intercourse, this happens within 2-3 days, this is the time for the egg and sperm to swim towards each other.

How long does fertilization last? The process of merging two parent cells itself lasts several hours. During this time, the fastest of the sperm penetrates with its head into the wall of the egg. It secretes special enzymes that securely glue it to the surface of the egg and split the membrane so that it can penetrate inside. When one sperm attaches to the surface of the egg, it immediately becomes inaccessible to any other sperm. Her shell becomes impenetrable to others. This prevents several male cells from getting inside and causing disruptions in the genetic program. Gradually, the fastest of the sperm is drawn inside by the egg, loses its tail and merges with the nucleus of the mother’s cell. This is how one embryonic cell is formed with a set of 46 chromosomes. The germ cells, female and male, have 23 pairs each.

The period during which fertilization occurs varies within a few hours. And then active cell division begins - in half, each new cell is again divided in half and thus a multicellular embryo is formed.

But it is impossible to say exactly how long fertilization occurs in each specific case; it depends on when ovulation occurred, when there was unprotected sex, and somewhat quickly the cells reached the point of their fusion. On average, conception should be expected in the period from 12 to 48 hours after ovulation, but when exactly ovulation occurs cannot always be calculated, especially for those who have sex irregularly.

What is conceiving a child and how it happens

Biologists and luminaries of medical science have been studying the process of the birth of a new organism from two parent cells for centuries, but the question of how conception occurs is still not fully resolved.

- this is a combination of a sperm and an oocyte, merging into a zygote, which, continuing to divide, becomes an embryo, then a fetus, and finally - a small new creature that has come to the planet. Everything is simple - but there are still so many secrets here.

What is conception
Favorable and unfavorable day for conception
Incompatibility of partners is the reason for the absence of pregnancy
Stimulation for conceiving a child
IVF conception - what is it?
Pregnancy has occurred: what next?

What is conception

Conceiving a child is not an instant process. Sexual intercourse alone is not enough to conceive a child.

This happens in several stages, which are repeated in almost every menstrual cycle:

Maturation of the oocyte, which lasts for 14 days.
The release of the “ready” egg into the abdominal cavity is ovulation.

Capture of the egg by the villi of the fallopian tube and penetration of the oocyte into the infundibulum of the tube.
Penetration of sperm into the tubes. Passing the way from the vagina, through the cervix, the uterine cavity, some of the sperm die.

Meeting with the egg.
Dissolution of the oocyte membrane by sperm enzymes, penetration of the “fastest” one inside.
The fusion of the male and female “halves” is the formation of a dividing zygote.
Promotion of the zygote through the tubes into the uterus.

At any stage, a failure may occur and conception will not take place.

To successfully conceive a child, several factors must coincide:

successful ovulation;
, without genetic defects egg;
presence of active sperm.

After sexual intercourse, if a sperm meets an egg, the woman does not have any special sensations. The first week is not yet pregnancy. Knowing what happens after conception day by day, you can predict when a woman will feel the first symptoms of pregnancy.

The merging process takes place within 2-36 hours. The journey of the future embryo through the tubes continues for 6-7 days. Afterwards it enters the uterus, where. At this time, some note the first sign that allows them to understand whether fertilization has occurred. It is called "implantation bleeding."

A woman notices a drop of blood on her underwear or a pink mark on toilet paper (this does not happen to everyone). Her first thought: “My period has come - early!” But this is not menstruation, but evidence of the implantation of the fertilized egg into the wall of the uterus - implantation. Small vessels are damaged - hence the admixture of blood. Pregnancy has begun.

What is an unfavorable day for conception?

Women know: there are days when the probability of a new life being born is almost zero. Unfavorable days for conception (safe) are considered to be 3-4 days immediately after menstruation. We take into account the week after the start of menstruation plus 3 - 4 days. This is the period of preparation of the female body for conception in the current cycle. The hormonal level changes, the maturation of follicles begins, of which by the time of ovulation the dominant one will be determined - the vesicle with the future egg. Conceiving a child is not yet possible.

With a cycle of 28 days by 14 (2 weeks from the expected end of the cycle): rupture of the follicle, release of the egg. Women are interested in how to understand that ovulation is near. A sure sign is a decrease in basal temperature. Sometimes my stomach feels weak.

You often feel unwell on this day, but ovulation (and the day after) is the most favorable moment for conception. The previous 2 days are considered suitable. Sperm can live in the tubes for 3-4 days; on the fifth day they die.

Conception window in the women's calendar

The “window of conception in the female calendar” (also known as “”) is approximately 4 days in the middle of each cycle. These are the previously discussed 3 days before ovulation plus a day after it. At this time, the uterus is ready for implantation.

If fertilization of the egg occurs after the window of conception has closed, the embryo will not be able to implant in the uterus. After this period, conception is impossible: the sperm die and the egg becomes unviable. The body prepares it to be released with menstrual blood.

Incompatibility during conception is the reason for the absence of pregnancy. Sometimes partners try to conceive a child for a long time, catching every ovulation - to no avail. The reason in some cases is the incompatibility of partners. How long to wait before going to the doctors is up to each couple to decide for themselves. The recommended period for seeking help is 6 months from the start of conscious and regular attempts to become pregnant. Doctors identify the following discrepancy:

by gene combinations;
immunological problems.

The biggest mystery is immunological incompatibility: the antigen proteins of a woman’s body, mistaking “strangers” (spermatozoa) from a man for dangerously degenerated own cells and destroy them.

Today, most problems can be corrected.

Ovulation induction increases the chances of success for those planning a child. It is used for a number of other gynecological problems. A preliminary examination is carried out:

blood sampling for hormonal testing;
checking the patency of pipes;
Ultrasound of the uterus, ovaries;
spermogram analysis.

Only qualified doctors know how to understand that stimulation will help in a particular case. Stimulation for conception is carried out either with clostilbegit (orally) or with gonadotropins (injection). The meaning is to help the maturing follicle, “spur”, forcing its development. What happens next is the same as during normal, natural ovulation: the egg leaves the follicle and “settles” in the tube. When stimulated (depending on the protocol design), several eggs mature. After sex, sperm quickly rush to the ready egg, one gets inside. A zygote is formed. Next, the zygote divides in the woman’s body, and after a week the embryo is attached. To support pregnancy, Utrozhestan and Duphaston are used.

IVF conception - what is it?

It’s the third week after PA (or replanting) - a home test should already show 2 stripes. During the examination, the gynecologist will see an enlargement of the uterus and note the cyanosis of the cervix. In the first days of pregnancy, a woman can find out about upcoming changes by her own feelings: something has changed in her, but she does not always realize what exactly. Still too fragile, unreliable.

If you are planning to conceive a child, remember that the first days and weeks are the most crucial time. You need to give your body the opportunity to get used to the new “resident”, and to do this, calm down, eat well, walk a lot, and get a lot of positive emotions. Then everything will go as it should. Help nature accomplish its great secret - the secret of the birth of new life!

Every woman is concerned with the question of how the birth of a new life occurs - this process worries all of humanity, because it is not without reason that the birth of a child is the most unprecedented miracle. A woman who dreams of becoming a mother is especially interested in when conception occurs after sexual intercourse. And even in the event of an unwanted pregnancy, if unprotected sex occurs, she is concerned about when it can be determined whether conception has occurred.

The question of how long it takes from sexual intercourse until the fertilization of the egg is not without interest is a minute, an hour or a whole day. What sensations can you experience? How is the process of conception carried out? The presented questions are asked by ladies not only when they want to get pregnant, but also vice versa - not to miss the moment of an unwanted pregnancy. It would seem that by feeling the moment of fertilization, you can consult a doctor in time for an abortion. Here it is important not only to feel, but also to know how fertilization occurs.

The process of conception and fertilization of an egg occurs day by day in the following sequence, that is, in stages:

Ovulation (the release of a mature egg) may be accompanied by a slight pain syndrome.
Fertilization (penetration of sperm into the egg) is not felt at all.
The process of dividing a fertilized egg (the fertilized egg divides into cells, creating conditions for the development of the embryo) is not felt by the expectant mother, but the body is already undergoing stress.
Implantation (fixation of the fertilized egg in the uterus, on its wall) is the first process fully felt by a woman.

For the fusion of male and female cells to occur, it is necessary to go through a period of normal ovulation and the release of a mature egg from a previously formed follicle. Only in this case is the egg ready for intercourse with the sperm, and therefore for the further development of the embryo.

The life of the egg is limited to one and a half days. If fertilization does not occur during this time, it dies and is released during menstruation.

This is important: Provided that a woman has a regular cycle, ovulation occurs strictly in the middle of the period. Compared to the short lifespan of an egg, sperm live for about a week, so for pregnancy to occur, there must be sexual intercourse on the day of ovulation.

How long does it take for fertilization to occur after intercourse?

On what day does a child become conceived after intercourse - this question can be interpreted differently - when does pregnancy occur? To conceive, sperm must travel a considerable distance and enter the fallopian tubes - this takes no more than 4 hours. It is in this place that the egg is located, and male cells fight for the right to penetrate it.

Only the healthiest and fastest of them can break through the shell of the egg and penetrate inside - this is how conception occurs. For this process, the sperm treats the egg wall with a special enzyme. After conception - its penetration - it will already be a zygote, into which access to other sperm is denied.

After 36 hours, cell division begins - this happens while still in the tube, and the first stage completely ends two days after fusion. The third day from fusion passes in the formation of the embryo and by the fourth day the zygote already consists of 16 cells. At this time, it begins to move towards the prepared womb of the uterus. If for some reason it cannot descend into the uterus, then implantation takes place directly in the tube and an ectopic pregnancy occurs.

Please note: Fertilization of the egg occurs in the fallopian tubes, through which the zygote moves to the uterus - this process can last up to 7 days. In this case, the woman has no signs of conception.

The resulting zygote after fertilization should enter the uterine cavity approximately 20 days from the start of the menstrual cycle. Then it is implanted to the wall of the uterus. The embryo is attached to the wall with the help of the placenta rudiment, where it will remain for the next 9 months of gestation.

Symptoms of egg fertilization by day

A woman can feel implantation to the wall of the uterus - she begins to have nagging pain in the lower abdomen, and brown discharge or blood clots from the vagina may appear. The woman feels unwell and weak. These symptoms during the period of conceiving a child are considered natural and should not cause concern in a woman. The implantation process lasts about 40 hours, after it is completed, the woman will feel normal.

The first signs of fertilization occurring

Whether conception has occurred can be determined by the sensations that a woman experiences already in the first days after fertilization. In her first week, the expectant mother’s body begins to change, preparing for the long process of bearing a baby. When menstruation has not yet been delayed, and the corresponding test is completely useless, there are signs by which a woman can determine whether conception has occurred or not.

The following points stand out here:

Increased salivation. Saliva secretion occurs regardless of whether the expectant mother is hungry or sees delicious food on the table.
Calf cramps. As a rule, they occur during night sleep.
Metallic taste in the mouth. It appears immediately after conception and cannot be eliminated. This sign is hard to miss.
Pigmentation. On a woman’s stomach, the white line running from the navel and down the abdomen becomes darker. Pigment spots appear on the face and along the hairline.
Bloating. A woman has a feeling of a bloated abdomen. Constipation may occur no matter what you eat.

These signs, which appear in almost every woman, are the first heralds of a joyful event, which are impossible not to notice. Even if the symptoms of conception are not so obvious, every woman can guess her interesting situation based on her internal feelings and mood. 10 days after fertilization, you can obtain confirmation of conception using a special test. The time of bearing a child is a responsible and wonderful time in the life of an expectant mother. Wanting to quickly ensure that the desired conception has occurred, it seems to her that the fertilization process takes a long time. In fact, the process of conception occurs within a week. The sensations afterwards are often not significant. But still, at the moment of implantation, you can feel discomfort in the lower abdomen - this will become the starting point.

fertilization- penetration of sperm into the egg

egg division after fertilization and its movement through the fallopian tubes

In order for it to come ovulation, an immature egg (follicle) in one of the ovaries matures under the influence of follicle-stimulating hormone, which is secreted by the pituitary gland. As the follicle matures, luteinizing hormone is produced. Under its influence, the follicle ruptures, releasing the egg. This is ovulation, which usually occurs in the middle of every normal period. menstrual cycle. After ovulation, the egg enters one of the fallopian tubes and from there into the uterus. Typically, an egg is capable of fertilization within twelve hours. If fertilization does not occur during this time, she dies and is hatched during menses along with menstrual flow.

For conception to occur, sperm must already be in the fallopian tubes. time when the egg is capable of fertilization. The sperm, being in the woman’s genital tract after ejaculation, usually does not die for another 48-72 hours. So about four days monthly, most favorable for conception.

For conception to occur, the sperm must penetrate the membranes of the egg. A large number of sperm are involved in the dissolution of the outer shell, but only one can connect with the egg. The egg and sperm combine to form one cell (zygote), which divides into two, then four, and so on. Each cell of the embryo contains the chromosomes of the mother and father, which form the individual genetic code of the child.

After conception The developing embryo passes through the fallopian tubes into the uterus. The cells continue to divide and form a ball called a morula. After about four days, fluid accumulates in the center of the morula and creates a cavity. This structure is called a blastocyst. After a few days, projections called chorionic villi form on the blastocyst. They penetrate the wall of the uterus and become attached to it. This process is called implantation. Implantation occurs approximately twenty days after the last menses. In it time after conception first signspregnancy usually absent.

When planning to conceive, it is necessary to consider that:

Ovulation may not occur in the middle of the cycle. In young girls and in cases of violation menstrual cycle, the ovaries often work irregularly, and therefore ovulation may occur earlier or later. The time of ovulation may depend on the emotional and mental state of the woman, which affects hormonal balance.

Various diseases affect a woman's ability to conceive and the possibility of implantation of a fertilized egg in the uterus.

It's very common lately asymptomatic course of gynecological diseases, including sexually transmitted diseases and tumors. Even pathological vaginal discharge This is not always the case with such diseases. Without analyzes It is difficult to distinguish them from normal discharge. With a hidden course, there are no female diseases stomach ache, bleeding, menstrual irregularities and other symptoms. Therefore, every woman needs a preventive examination by a gynecologist at least twice a year.

Conception- First step pregnancy. Sometimes, in order for conception to occur faster, preparation is necessary. Choose favorable days for conception better according conception calendar. Male reproductive cells are able to remain active in a woman’s body for several days. If there is no ovulation during this period, then conception will not occur and they will die. The most favorable time for conceiving children- This day ovulation.

Since the lifespan of an egg is about 12 hours, sexual intercourse days before ovulation is more preferable for conceiving a child, how after ovulation, since it takes sperm about a day to enter the fallopian tube. Define day ovulation and calculate favorable days for conception possible by basal temperature chart, but this method is complicated and inaccurate. You can also do it yourself in the middle of the menstrual cycle. tests for ovulation and contact a gynecologist who, using analysis discharge, Ultrasound, hormone tests will determine the day of ovulation with an accuracy of 1-2 days. Some women subjectively feel ovulation - they feel pain in the lower abdomen, swelling and tenderness of the mammary glands, nausea, and note the release of ovulatory viscous mucus from the genital tract on the day of ovulation. Sometimes there is discharge during ovulation bloody. Ovulation may occur on different days for different women. Therefore, after determining the days of ovulation for three menstrual cycles, a woman can create an individual conception calendar.

Conception calendar for ovulation in the middle of the menstrual cycle

Poses for conception

It is recommended to abstain from sexual intercourse for 3-5 days before ovulation to allow sperm to mature. For conception, it is better if a woman lies on her back during intercourse. After it’s finished, you can put a pillow under your buttocks and raise your legs. This pose need to save for some time. In this case, the cervix will be immersed in the sperm located in the posterior fornix of the vagina. Also facilitate the penetration of sperm into the cervical canal and conception helps knee-elbow pose during or after sexual intercourse. Most young women who are recently sexually active do not experience orgasm during intercourse. Having an orgasm does not affect conception.

Days before and after conception

IN days before conception child And after conception, drinking alcohol by spouses should be excluded, since alcohol has a damaging effect on female and male reproductive cells. It is also necessary to avoid other harmful factors - smoking, household chemicals, x-rays, medications. If the spouses are not healthy, it is better to postpone conception until recovery. In case of long-term use of medications and chronic diseases, you should consult your doctor about their possible effect on conception And pregnancy.

In the days after conception first before missed period signspregnancy usually absent.

The best time to conceive a child

The biggest advantage of conception at any time year is the very fact of pregnancy, especially if it is long-awaited.

Conception in summer

When conceiving in the summer, first trimester pregnancy occurs in summer-autumn, childbirth - in the spring months. The advantages of this time for conception include good natural vitaminization of the body, the opportunity to spend more time in the fresh air, and a favorable epidemiological situation for acute respiratory infections in the first trimester of pregnancy. But childbirth and the formation of lactation occur in the most low-vitamin season of the year; it is necessary to ensure a sufficient supply of essential nutrients to the female body.

Conception in autumn

The first trimester of pregnancy occurs in autumn-winter, childbirth - in the summer months. At the same time, there is good natural vitaminization of a woman’s body during the period of conception, before childbirth and during the period of lactation.

But the first trimester falls during an epidemiologically unfavorable season - outbreaks of influenza, acute respiratory infections. In the first trimester, the fetus is especially vulnerable to infectious influences. This should be taken into account if a woman is prone to colds.

Part of the last trimester of pregnancy will take place in hot summer conditions. This should be taken into account by women who do not tolerate heat well and need a lot of fluid. The heat complicates the fight against late toxicosis of pregnancy, worsens the well-being of the expectant mother, and it is difficult to maintain a drinking regime at high temperatures.

Conception in winter

The first trimester of pregnancy occurs in winter-spring, childbirth - in autumn. The advantage of conceiving at this time is good natural vitaminization in the last trimester of pregnancy, during childbirth and during the period of lactation.

But the first trimester of pregnancy occurs at the peak of epidemic troubles in terms of influenza and acute respiratory infections. Moreover, at this time, as mentioned earlier, the embryo is most sensitive to the effects of infection.

Conception in spring

The first trimester of pregnancy occurs in spring-summer, childbirth - in winter. The disadvantages include the peak of hypovitaminization of the parent organisms at the time of conception and early pregnancy, the unfavorable epidemic situation in terms of acute respiratory infections and influenza during conception in the first half of spring.

Conceiving a child - boy or girl.

It is believed that compliance with certain rules before conception guarantees conceiving a child certain gender. Statistics do not confirm the effectiveness of any of the “folk” methods of planning the sex of a child; positive results when these rules are followed are random.

All of the “folk” methods listed below for planning the sex of a child have no scientific basis, but with strong faith in them, they may be effective. You should be especially careful when following the described diets, since none of them is complete in terms of nutrients, which can adversely affect the health of the mother and child.

Folk methods of conceiving a boy or girl

To conceive a boy It is necessary to plan conception in odd-numbered months in even-numbered years of life, or in even-numbered months in odd-numbered years. It is believed that it is necessary to have sex at night, when there is a month in the sky, not a full moon, and there is no precipitation. The bedroom should be cool, the window should be open, you should lie with your head facing north, you should put some “masculine” attribute under the pillow - a toy gun, a car. Couples where the husband is more sexually active than the wife are more likely to conceive a boy. During sexual intercourse, a man should achieve orgasm earlier than a woman, and after sex, future parents are advised not to sleep for a long time. Before sexual intercourse, the husband should wash the testicles with cold water, which will increase sperm activity. Before the big night, for at least three weeks, a woman should eat meat and fish products, potatoes, mushrooms, drink tea, coffee, forgetting about milk and dairy products, as well as bread and egg yolks. All dishes must be salted.

To conceive a girl The year and month of pregnancy can be even or odd. The day should be rainy, the moon phase should be full moon. In these cases, you need to have sex in the evening, in a room painted pink, lie with your head facing south, and put a pink ribbon under the pillow. The window should be closed and the air in the room should be scented. Girls are guaranteed to couples where the wife is more sexually active than the husband. Following a dairy diet helps in conceiving a girl; fish, bread, carrots, cucumbers, greens are allowed, the consumption of dried fruits and meat is limited, carbonated water, salt and spices are excluded. The girl's future father should warm his genitals with warm underwear to reduce the activity of male reproductive cells.

One of the frequently discussed methods of planning the gender of a child has the sonorous name “blood renewal”. It is believed that in men, blood is renewed every 4 years, and in women - every 3 years. If a person has had some kind of surgery or blood loss during his life, then the countdown begins not from the day of birth, but from the date of this blood loss. Thus, the age or time since the last blood loss is divided by 4 in men, and by 3 in women (with Rh-negative blood in the mother, the opposite is true - for men the denominator will be 3, and for women - 4). Whoever has the larger balance (mom or dad) has “younger”, stronger blood, therefore, the child will be of the same gender. The method has not received any scientific justification.

Conceiving a boy or girl from a scientific point of view

According to statistics, for every 100 girls, an average of 106 boys are born. Even more male embryos are formed, but male embryos, like boys in their first year of life, die more often. Dangerous games, male professions, wars, bad habits, often lead to the death of adult men. By reproductive age, the sex ratio becomes approximately 1 to 1.

The sex cells of a man and a woman each contain one sex chromosome and 22 somatic (non-sex) chromosomes - the sperm and egg contain 23 chromosomes. When a sperm and an egg merge during the process of fertilization, the individual genotype of a girl (46 XX) or a boy (46 XY) is formed. Sex is determined by the combination of two sex chromosomes: girls have the combination XX, and boys have XY. In a woman, all eggs contain one X chromosome (there are no other sex chromosomes in the female body). There are two types of sperm in men: those with an X chromosome and those with a Y chromosome. If the egg is fertilized by an X sperm, a girl will be born, if Y, a boy will be born. Thus, the sex of the child depends on the male reproductive cell! Therefore, the father’s claims against his wife regarding the sex of the newborn child are completely unfounded. For the same reason, all methods of planning the sex of a child related to the expectant mother are unfounded. A woman can pass on only the X chromosome to her child, and the second chromosome - X or Y, which will determine whether the child is born a boy or a girl, the child’s father reports.

Some methods of planning the sex of a child are based on scientifically proven facts. They are difficult to use for women with irregular cycles, which make it difficult to determine the exact day of ovulation. In healthy women with a regular menstrual cycle, the date of ovulation may also shift.

Planning the sex of the child based on the date of ovulation.

To increase the likelihood conception of a boy, it is necessary that sexual intercourse occurs during ovulation time. The method is based on the differences between X and Y sperm. The X chromosome is much larger in size than the Y chromosome. X sperm are slower, but more viable. Fertilization of an egg by a sperm is possible after its release from the ovary - after ovulation. If sexual intercourse took place several days before ovulation, then the likelihood of conceiving a girl, because, most likely, only hardy X-spermatozoa remain in the woman’s genital tract, which will receive the honorable mission of fertilization. If future parents manage to abstain from sex for at least a week before the day of ovulation, and sexual intercourse occurs on the day of ovulation, then the likelihood of conceiving a boy increases, since the extremely mobile Y-sperm will be the first to reach the egg, ahead of the X-sperm. 2-3 days before ovulation, the environment in the vagina is more acidic, which contributes to the rapid death of Y-sperm. During ovulation, the pH of the environment becomes slightly alkaline, which promotes the survival of Y sperm.

Dependence of the child's gender on the sexual activity of the parents.

With frequent sexual intercourse (daily or every other day), boys are more often born because there is a higher probability of fertilization with fast Y-sperm. With low sexual activity, the likelihood of having a girl increases; X-sperm remain viable until ovulation in the woman’s genital tract (up to 5 days after intercourse).

Practical advice.

A woman needs to determine the time of ovulation over several menstrual cycles using a basal temperature chart, an ovulation test, or using a daily ultrasound - from approximately the 10th day of the menstrual cycle until the release of the egg from the ovary. Ultrasound clearly shows the maturing (dominant) follicle containing the egg. It disappears after ovulation, and in its place a corpus luteum forms. Some women subjectively feel ovulation, for example, they feel pain in the lower abdomen, nausea, and note the release of ovulatory mucus from the genital tract on the day of ovulation - such mucus is viscous and quite abundant. When planning to conceive a daughter, sexual intercourse should be 2-3 days before the calculated date of ovulation, if you want to conceive a son, you should abstain from sex at least 2-3 days before ovulation, and sexual intercourse should occur during ovulation.

Separation of spermatozoa into X and Y using special procedures.

Sperm are separated using laser technology. After performing one of these procedures, the egg is fertilized in a test tube with a selected sperm, an embryo of the desired sex is obtained and it is introduced into the uterine cavity (in vitro fertilization).

Even this scientifically proven method of planning the gender of a child does not provide a 100% guarantee. Possible genetic changes when using artificial sperm sorting procedures have not been fully studied. In the future, perhaps, sperm separation will help solve the problem of preventing hereditary diseases associated with gender.

None of the methods of planning the gender of a child provides a 100% guarantee. The appearance of a healthy child of any gender, boy or girl, in a family is a happy event.

Artificial insemination

Intrauterine insemination sperm of the husband or donor is performed when immunological incompatibility of a married couple is established or when the fertilizing ability of the husband's sperm is reduced. On a favorable day of the menstrual cycle for pregnancy, pre-processed sperm is injected into the woman’s uterus. The effectiveness of intrauterine insemination in the treatment of infertility is quite high. It is advisable to repeat the procedure for 4 cycles.

In Vitro Fertilization outside the uterus with subsequent transfer of embryos into the mother's uterus (IVF) is carried out in case of persistent obstruction of the fallopian tubes. Those stages of development of the egg and embryo that normally take place in the fallopian tube in the first 2-3 days after fertilization, with IVF, occur under artificial conditions - “in vitro”. The IVF method consists of several stages:

Prescribing a woman drugs that stimulate the growth of several follicles in the egg - induction of superovulation

assessment of ovarian response to induction using ultrasound and hormonal studies

determining the moment when follicle puncture should be performed using ultrasound examinations and determining the concentration of hormones

puncture of follicles, extraction of eggs from them, placing them in a special environment

collection and preparation of spermatozoa

connection of eggs and sperm, insemination of eggs in vitro and placing them in an incubator for 24-42 hours

transfer of embryos from a test tube to the mother's uterus

prescription of drugs that support implantation and development of embryos in the uterus

pregnancy diagnosis

management of pregnancy and childbirth

The effectiveness of IVF currently averages 30%. This is a high percentage, considering that the probability of conception in a healthy man and woman in the same menstrual cycle is about 30%. Due to the high efficiency of IVF, today this method is used for almost all forms of infertility. With IVF, preimplantation diagnosis of hereditary diseases is possible. The frequency of genetic diseases in children born through IVF does not exceed that in children conceived in the usual way.

Surrogacy. The egg obtained from the woman is fertilized with her husband's sperm. The resulting embryo is transferred into the uterus of another woman, the so-called surrogate or biological mother. The surrogate mother carries the child and after birth gives it to the owner of the eggs - the genetic mother.