How many weeks the pregnancy lasts in women

Women who are preparing to become Mama are always interested in how much pregnancy continues, and what factors can affect it. The duration of the toddler tool is quite individual and depends on many reasons.

Normal duration

For the formation and maturation of the baby in the maternal womb, the nature took a completely definite time - it takes from 266 to 280 days. In the people it is believed that pregnancy lasts nine months, but in practice everything is somewhat different ways. Normal pregnancy lasts from 37 to 42 obstetric weeks, while there is no difference, a woman is pregnant with a girl or boy - children of both sexes pass the same stages of formation and growth in the intrauterine period of their development.

Obsters measure time differently - they do not use the calendar we are not familiar to us, but weeks for 7 days. Thus, one obstetric month is exactly 4 weeks, while the calendar can consist of 30, 31 or 28-29 days. The counts of obstetrics begin not from the moment of conception of the baby, since in most cases it is impossible to establish this moment, and from the first day of the last menstruation. Therefore, an obstetric period is always ahead of the embryonic one for 14 days.

Medical statistics shows that up to 80% of genera in women occurs to 40 or after 40 weeks; Exactly on the day of the DA, determined as the estimated, gives birth to only 5% of women. Birth up to 37 weeks are considered premature, and after 42 weeks - late. The duration of the nipping (period of gestation) in people of different nationalities, ethnic groups, the age is almost the same, only small amendments are possible.

Focusing on one specified day, obstetrics do not want to mislead a woman. This date appears in the future mother's medical map as an approximate reference point to which the doctors will watch throughout the entire pregnancy and when choosing a method of the delivery.

From ovulation it would be meaningless - ovulation in all women occurs at different times, errors are possible for several days, because the menstrual cycle proceeds in different ways. The exact date of the sexual contact, which led to the emergence of a new life, is not all ladies, because for an adult healthy woman, it is quite normal to conduct regular sex life. But by default, it is understood that the child's conception is possible only during the period of ovulation and during the day after it, while the egg is viable. However, the moment of ovulation is not obvious. The most averaged and accurate method is the method of calculating from the first day of the last menstruation, usually women are usually remembered.

Pregnancy continues as much as you need to ripen the baby and the settings of the female organism on the generic process. Both of these factors are very complex and multistage. If there is no influence of certain factors, the baby will spend 266 to 280 days in the womb.

Know the exact period of pregnancy is important for every future mother, the release time depends on the decree, preparation for the birth of a child and a lot more. There are several ways to learn an approximate date of conception, as well as factors affecting the duration of the nipping. What can threaten the premature or transferred pregnancy of mother and baby, how to try to avoid it - I suggest you learn from the article.

How many weeks the pregnancy lasts from the day of conception in the norm

We used to assume that pregnancy lasts 9 months or 40 weeks, but both of these options are not entirely true. Most often from the moment of conception before the birth of a child takes about 266 days, that is, the pregnancy lasts 38 weeks from 80% of women. The date of birth is because it is called the estimated (PDR) that in most cases it becomes a surprise, because it is difficult to calculate it difficult, even knowing the day of conception. It is impossible to predict how much time will need an egg for fertilization and subsequent consolidation in the uterus. Many mothers do not know what day the conception occur is that, in general, normally for people leading active sex life. Women with a regular cycle of menstruation in 28 days is easier than everyone to calculate the approximate date of birth, you need to add to the beginning of the latter before conception of the menstruation 280 days

Therefore, the PDR is calculated, focusing on the beginning of the last menstruation before pregnancy. Ovulation - the day of the exit of the egg for fertilization - occurs on the 14th day of the monthly cycle. Conception can occur and a few days after sexual intercourse, because with favorable conditions, spermatozoa remains suitable for fertilization for about a week. If you count 280 days from the day of the beginning of the monthly, you can get an estimated date of delivery (14 days before ovulation and 266 after). Forty weeks of pregnancy is a period that obstetrics Gynecologists consider the norm. But in fact, the first 2 weeks of them is not pregnant.

errors in the calculation arise due to the difference in the duration of the menstrual cycle, some women have 24 days, from others - up to 34. Consequently, ovulation occurs before or later than the ladies with a duration of the cycle at 28 days taken by the average. Sometimes the child is born day per day according to plan, but it is no more than a simple coincidence. Normal docking pregnancy is considered to be the one at which childbirth occurred after 37, but up to 41 weeks of to wear.

My close girlfriend Oli 13 years ago there was a funny episode. Well, as funny, now I remember with a smile, and then Lelen was not to laughter. She just got married and, after 2 months, he learned that he would soon be mom. The joy of her husband was not limit until he saw a week a week more than their family life. The arguments of the spouse that married a girl was not very convinced by Zhenya. I had to hold with me to the doctor, who explained the future father, why the difference was turned out on the date and date of the wedding. If the Bear was born not a fiery and growl and with heels, like Dad, Eugene doubted, according to him, so far. This is how the definition of pregnancy on the menstrual cycle almost destroyed the new family.

Factors affecting the duration of pregnancy

We found out that more than 2/3 of pregnancies from conception before childbirth lasts 266 days, it was time to learn about the factors causing deviations from the norm in one direction or another. The reasons for the fact that the battery is larger or less than 38 weeks:

My sister's girlfriend was sure that he would give birth to the New Year, although the PDR was put in the middle of January, and Katya was very afraid to give birth. But when the twenties of January appeared on the calendar, her baby was still not going to get out of his mother, over the past 2 weeks before childbirth, the boy even gained in weight and clearly counted on the continuation of the banquet. And ultrasound showed that it is time to stimulate generic activities. So bogatyr at 3900 grams weight was born. Now, in 5 months, it looks at all 8 or 9, and Katya jokes that if it were not for doctors, her calm karapuz was still sitting in her mother's belly. Katin fear before childbirth and the weight of the kid managed to extend the pregnancy to 41 weeks, but I do not advise you to repeat.

When waiting for childbirth: all ways to define pregnancy in weeks

As soon as the future mother realized her new position, she begins to wonder what time it prepares a cot and clothes for the baby. Even at school, girls will learn that for the complete formation and development of the human child need no less than 9 months.

However, when applying a pregnant woman in due time to the gynecologist, it faces other methods of counting the deadlines of pregnancy and alleged childbirth. How many pregnancy really lasts with a woman and what can affect the duration of the nipping?

Duration of pregnancy in women in weeks

Find out the exact time of fertilization is most often not possible, since to trace the moment of the exit of the egg from the follicle or the date of its introduction in the epithelium of the uterus is almost impossible. Theoretically, you can approximately track such moments using a constant measurement of basal temperature before and after ovulation.

Also, it is also impossible to focus on the exact time of conception, because after the act of fertilization before the introduction of an egg in the uterus can pass several days. All the physiological processes of conception in women take place differently in different times, therefore all individual characteristics are taken into account in medical practice.

Doctors gynecologists are used to calculate the so-called obstetric weeks. This method is the easiest and relatively accurate, based on the knowledge of almost any female start and ending date.

What is the difference between obstetric weeks from calendar weeks in women?

According to the obstetric counting in the norm, a woman should enter the fetus for 40 weeks or 280 days. There are 10 months, and in the month will be 28 days. To clarify the deadlines, they take the initial day of the last month and count on it for 9 months and another 7 days.

This method cannot give absolutely accurate data on the periods of pregnancy, since some women do not always take place regularly. With such a non-permanent cycle, inevitably occurred inaccurate in counting. Obviously, when using this method, the difference arises between the real calendar months and obstetric periods.

How many weeks the pregnancy will last?

An experienced gynecologist will call an approximate date of birth at the time of the first visit to the woman of his office. If the future mother herself behaves counting, they usually deviate from the medical for about a few weeks. Deviation of 10 days from an indicative date is considered normal.

On the usual calendar, pregnancy lasts nine months. How many weeks is considered to be a deviation on average, the duration of pregnancy is 40 obstetric weeks. And the exact day when the childbirth will begin to be called difficult.

premature delivery

Premature is considered to be childbirth until the 38th week of pregnancy. A long period of time about premature births was discussed only on the period of the 28th week. Prior to the onset of the deadline, the beginning of the generic activity ended with miscarriage. However, thanks to the achievements of medicine, there are possibilities that allow to lick the baby, which appeared on the light after the 22nd week, weighing only 0.5 kg.

Therefore, today, the birth of this period is considered premature, if the baby was born alive and lived 7 days. Children born on the period until 28 weeks are very difficult to leave. Because of this, some experts consider birth after the 28th week. They believe that until this point you can talk only about miscarriage. Of course, not every medical facility is equipped with equipment for saving the lives of such children born weighing less than 1 kg.

transferred pregnancy

Modern studies confirm that the diagnosis of "transferred pregnancy" is considered to be reliable not in all cases. Because one hundred percent define the date of delivery is not possible. The fact is that the lifetime period depends on the moment of the exit of the egg from the ovary, the time of fertilization, the speed of the movement of the spermatozoa, the life cycle of the egg and the other characteristics of the female organism.

Modern gynecological obstetricists consider the normally childbirth, which began on the period of 37-42 weeks. It is believed that the woman "overhears" if the pregnancy lasts 10-14 days after the occurrence of the 40s. At the same time, doctors must identify signs of the suffering of the child. Birth with such pregnancy is considered late.

• pulling pain at the bottom of the abdomen or from one ovarian;
• essential lifting libido;
• vaginal selection odorless and Colors (cervical mucus);
• a minor increase in body temperature.

The duration of the menstrual cycle, the processes of which are directed to the ripening of the female genital cell in everyone different. The normal duration is 23-35 days, the average - 28 days. Normal is the deviations within three days.

Mature goveta ready to fertilization goes to the uterine pipe once for the cycle - so the ovulation occurs. In the egg (Fallopian tube), the sex cell awaits a spermatozoa that fertilizes it. With successful conception, a new cycle is begins. If the egg cell was never fertilized, the new menstrual cycle begins.

It has always been believed that the woman puts the child for 9 months. But if we talk exactly how many weeks the pregnancy lasts, it will turn out for 10 months, since the norm is considered the 40-week period of tolerance. Such a conclusion was made by scientists when observing 125 women in the "position" of which on ultrasonography identified the duties of the delivery. Of these, 4% gave birth to a set date, 70% - later, about 10 months after confirming the presence of a fetal egg on a Uz-study, several gods were premature.

An interesting feature was also noticed: more adult women pregnancy lasts longer. Each year of age, pregnant adds one day to having to wear. In addition, if the future mother was born a large, with a lot of weight, then she will be the child, most likely, longer: every 100 grams of their excess weight at birth, are equal to the addition of one day during gestation.

What is an obstetric term?

How many obstetric weeks lasting pregnancy - began to calculate since ancient times, because then little was known about the peculiarities of the reproductive system of women, especially about ovulation. Therefore, the lack of menstruation was the main sign of the coming pregnancy, and the term was considered from the date of the last menstruation. Despite the small knowledge of the ancient doctors in medicine, this method of calculation, which today's gynecologists have been quite accurate.

The duration of the obstetric week does not differ from the calendar, it also consists of seven days. But the obstetric term is different, as it suggests in the month not 30 or 31 days (28 or 29 in February), but Exactly 28 in each month, that is, exactly 4 weeks.

Obsteric period lasts longer than real about 14-21 days. In 20% of women, the difference is 14 days, still in 20% - less than two weeks, in 45% - about three, in 15% - more than three weeks. This is due to the fact that far from all menstrual cycle is ideal (28 days), most women are shifted in one direction or another, respectively, ovulation is shifted. It is because of this that it is impossible to accurately calculate the embryonic period (from the moment of ovulation and fertilization), so they use obstetrics.

How is the obstetric term?

Often, childbirth begin in an unidentified period, but before or later, so the calculated date is alleged. From 38 to 42 obstetric weeks - a normal pregnancy lasts so much, that is, a child born in this interval is considered to be dodged.

For each woman, pregnancy is something special and trembling, because a tiny little man will appear very soon to light. How many days a pregnancy lasts, and what week give birth? There are no unambiguous responses to these questions, even experienced doctors are sometimes mistaken in the calculations.

The child will be born then when his birth is coming. This period is individual for each woman. No one can clearly say, at what period of time there was a conception, and how the kid will grow and grow in the womb.

How much does the pregnancy last on the primary and repeated women?

However, each woman has a period of pregnancy proceeds individually. It happens that the second birth begins earlier. This is not pathology. There are many factors affecting the terms of pregnancy:

Methods for calculating the term of pregnancy

As soon as a woman knows about his "interesting situation," the question is worried, since the week of pregnancy can be given. Start counting days on the calendar. At the same time, she thinks that the date of childbirth will come in 9 months. This is not entirely right.