Generally speaking, whether it is the first pregnancy, the second pregnancy or the third pregnancy, the birth time of the fetus is within 37-42 weeks of pregnancy. Those who are earlier than 37 weeks of pregnancy belong to premature infants, and those who are later than 42 weeks of pregnancy belong to overdue pregnancies, which is not conducive to fetal health.
As for the specific time of birth, let alone ourselves, even the doctor can't confirm it. We can only ensure the intrauterine health of the fetus through prenatal examination, and then judge the birth time of the fetus according to the opening of the pregnant woman's uterus. But before the cervix is opened, pregnant women will have some prenatal signs. I suggest you know clearly in advance. Once it appears, you can seek medical treatment according to your priorities.
1. Fundus decline
For pregnant women who are pregnant for the first time, about 2 weeks before labor, the exposed part of the fetus gradually drops, enters the pelvis, and the uterine bottom will be significantly reduced. At this time, the changes of pregnant women are very great, such as upper abdomen relaxation, smooth breathing and wide appetite. The pregnant woman's abdomen falls badly, and there is a feeling that the fetus will fall out. It can also cause backache, frequent micturition, urgent micturition, and obvious increase in secretion. In this case, pregnant women don't need to worry too much. There are still about two weeks before production. Just prepare for production step by step, and those who have jobs can prepare for work handover. Don't run around without a job, especially if you don't travel far. When going out for sports or shopping, someone should accompany you.
See red
When the fetal head falls into the basin, the separation and friction between the fetal membrane and the uterine wall will cause blood vessel rupture and bleeding, but the amount of bleeding is not much, generally mixed with mucus, sticky texture, and some may only be a little secretion on underwear. The color of seeing red is generally brown, pink or red, and it is not particularly bright. The time to see red is also different, some appear before delivery 1-2 days, and some repeatedly appear before delivery 1 week. As long as the amount is not much (no more than menstrual flow) and the color is not particularly bright, you don't need to worry too much. It's not too late to go to the hospital after self-observation has regular contractions at home.
Step 3 shrink
The contraction here refers to the regular real contraction! At the beginning of real contraction, pregnant women will feel a little pain in their abdomen, but this pain is very low, and the interval is long and the duration is short. However, with the passage of time, the pain will become more and more severe and last longer! When the pain lasts for about 30 seconds every 5 minutes, the cervix is almost 2 cm, and pregnant women have to go to the hospital for labor.
break the ice
For broken water, many pregnant women don't quite understand it, and they are always confused with urine. In fact, it is not difficult to judge. What comes out of the water is amniotic fluid. Amniotic fluid is colorless and tasteless, and may or may not contain some fetal fat floating objects, so pregnant women are unconscious and involuntary. In other words, pregnant women unconsciously and involuntarily shed some colorless and tasteless liquid, which is likely to be broken water. Once the water breaks, it is not far from the birth of the fetus. No matter where the pregnant woman is, be sure to see a doctor in time!
2. Before or after the due date?
When is the first pregnancy usually born? Before or after the due date? In fact, it is related to these factors.
1. Is the menstrual cycle regular?
Medically, gestational age and expected date of delivery are calculated according to the first day of last menstruation, such as the month of expected date of delivery = the month of the first day of last menstruation minus 3 or plus 9; Days of expected date of delivery = date of the first day of last menstruation plus 7.
But every woman's menstrual cycle is different, some are 28 days, some are 2 1-22 days, and some are 30-36 days. Every woman's physique is different, and her menstrual cycle is also different. Some women have irregular menstrual cycles, some one or two weeks earlier and some one or two weeks later. These factors will affect the calculation of gestational age and expected date of delivery.
It can be said that the more regular the menstrual cycle of women, the more accurate the expected date of delivery; On the contrary, if the menstrual cycle is too different, the expected date of delivery will also be affected, even earlier than 37 weeks of pregnancy or later than 42 weeks of pregnancy.
Many netizens have consulted online. According to the calculation of the first day of the last menstruation, they were obviously pregnant for 4 months, but the prenatal examination said that the fetus was 2-3 weeks older or smaller, which was largely due to irregular menstruation and miscalculated the gestational age.
Therefore, it is suggested that pregnant women should have a B-ultrasound examination at 8-9 weeks of pregnancy, which can not only confirm the development of embryos, but also confirm the actual gestational age of the fetus, so as to calculate a more accurate expected date of delivery.
2. Whether the nutrition during pregnancy is sufficient.
If you want a fetus to be born, you must let it mature, and the time of fetal maturity is related to gestational age and nutrient intake. Among them, nutrition intake accounts for a large proportion. If pregnant women have improper diet and malnutrition, then the fetus will also be malnourished, which will easily lead to growth retardation of small people, thus affecting the birth time; If the pregnant woman is seriously deficient in nutrition and the fetus is too thin, premature birth may occur; If pregnant women overeat and eat too much nutrition during pregnancy, it will lead to fetal overnutrition and macrosomia, which will easily lead to difficulties in production and affect the birth time of the fetus.
3. Is the fetal lung mature?
The fetus wants to be born, in fact, the most important thing is that the lungs are mature! Fetuses always rely on placenta and umbilical cord to absorb nutrients and oxygen in the womb, but they need to rely on lungs to breathe after birth, so they must have mature lungs if they want to grow up healthily after birth.
The lung is the last organ of the fetus. Many friends know that by the ninth month of pregnancy, most of the fetal organs have matured, but the lungs are still developing. Only when the lungs are mature will the fontanel of the fetus release a substance called emulsifying enzyme. After pregnant women feel this information, the birth canal will also release emulsifying enzyme. Under the joint action of fetus and pregnant woman, pregnant woman will start and fetus will be born.
Therefore, the birth time of the fetus is related to the development of this part, which is really scientifically based!
4. Other factors
In addition to the above factors, there are many external factors that will also affect the birth time of the fetus. For example, improper diet, excessive exercise or bump injury.
Martin has a colleague. After 36 weeks of pregnancy, everything is normal and the fetus is still developing. It is estimated that she will have a baby for a while. However, on the third day after the exam, this colleague fell down in the office and hit his stomach on the edge of the table. At that time, she didn't feel anything, but at night, she suddenly became red, and she gave birth to a girl weighing 5 kg that night.
Another friend, who just turned 24 when she was pregnant, was not only young but also in excellent health. In the third trimester, she always helps her mother-in-law to work in the fields. After 34 weeks of pregnancy, she harvested the autumn harvest at home and went to work in the fields again. Unexpectedly, after working for less than 2 hours, the water suddenly broke. At that time, home was far from the hospital. On the way to the hospital, the child was born prematurely, weighing only 4 kilograms, and stayed in the incubator for a month before going home.
So pregnant women must protect themselves during pregnancy. Besides healthy diet, moderate exercise and regular check-up, we should also pay attention to uterine contraction, especially in the third trimester. Be careful not to do anything that stimulates false contractions. Once overstimulated, it is likely to lead to premature delivery of the fetus.