The expected date of delivery is 40 weeks of pregnancy, and the fetus is full-term at 37 weeks of pregnancy. 2 weeks before and after the expected date of delivery, that is, 38 weeks ~ 41 weeks + 6 delivery, all belong to full-term babies; Among them, 40 weeks ~ 41 weeks + 6 weeks of pregnancy, which is a delayed pregnancy; A pregnancy beyond 42 weeks is considered an overdue pregnancy.
Generally, babies are born after 37 weeks, which are very healthy, and parents do not need to worry too much, so some babies are born at 38 weeks, which is a normal phenomenon.
So what factors might be related to the birth of a fetus at 38 weeks? It may be caused by maternal factors, babies or external factors.
1: Maternal factors
When the mother often performs physical work and excessive exercise, it may cause the sympathetic nerve of the brain to appear excited, thereby inducing contractions in the body, so that the baby is born at 38 weeks.
2: The baby factor
In the case of twins, as the two develop and grow, the volume and pressure in the uterine cavity may increase, causing the baby to be born at 38 weeks.
3: External factors
When the mother is at 38 weeks, if she is hit by the outside world, it may stimulate the inside of the uterus, resulting in significant contractions, prompting the baby to be born at 38 weeks.
According to clinical statistics, the average delivery time of male babies is generally 38 weeks + 2 days of pregnancy, while that of female babies is 3 days later, and the average delivery time is 38 weeks + 5 of pregnancy.
To sum up, it is very normal to give birth at 38 weeks of pregnancy, and it is not necessary to give birth at the due date as everyone thinks. Because the due date is estimated and not very precise.
How is the due date calculated?
The expected date is calculated as the number of days of the last menstrual period plus seven, the month plus nine or minus three, and the final date is the due date. The entire gestation period is ten months, forty weeks. But the due date is only a rough estimate, and it is normal to be born within the first three weeks and two weeks after the due date.
At 38 weeks of pregnancy, the fetus weighs about 3.5~4 kg, the length is about 50 cm, the fetus becomes larger, the uterus is too crowded for the fetus, and the baby will start delivery, which is very normal.
Precautions for pregnant mothers in the third trimester:
1: In the third trimester, the expectant mother's body will feel more tired, and she can choose to lie on the left side to provide more blood and oxygen for the fetus. If there are special circumstances, you can also choose to lie on the right side, but it is not recommended to lie flat.
2:38 weeks onwards, you can eat more foods rich in vitamin B to promote the conversion of sugar into energy in the body, such as millet, oats and other grains, oranges, spinach and other fruits and vegetables, as well as eggs and animal liver.
3: Keep a good mood, exercise moderately, and be mentally prepared to welcome your newborn baby. If you have time, you can also practice the Ramazer breathing method more, which will help with childbirth.
Therefore, expectant mothers must maintain a good attitude, do not think that the baby is born at 38 weeks, and it has not yet reached the due date. These worries are superfluous, because the fetus around 38 weeks is a mature fetus, whether it is the maturity of the placenta or the size of the fetus, it is very suitable to come out and meet with mom and dad!