Big belly like pregnant

The volume of a woman's belly changes greatly because there are reproductive organs such as the uterus inside the belly. Especially after pregnancy, the belly will slowly grow larger, causing great changes in the woman's body shape. For women who have never been pregnant, an enlarged belly is disturbing. Let’s take a look at why a woman’s belly looks big and like she is pregnant. I hope everyone can understand it.

As the mother's pregnancy gets longer and longer, the fetus, placenta and amniotic fluid are formed and developed, and the uterus gradually grows larger and softens. At full-term pregnancy, the uterine capacity is about 5000ml, an increase of about 1000 times; the weight is about 1100g, an increase of nearly 20 times. The fetus will also grow larger, but some pregnant women find that their stomachs have not changed much after pregnancy.

During the first three months of pregnancy, the pregnant woman's abdomen is not obviously protruding. On the one hand, it is because the fetus is not yet fully developed. On the other hand, it is because the pregnant woman's various pregnancy reactions are relatively strong, which leads to physical weakness, loss of appetite, and naturally the enlargement of the belly is not very obvious. By the fourth month of pregnancy, the pregnant woman's belly begins to grow larger, with the uterine height ranging from 16 to 20.5 cm and the abdominal circumference starting to increase at a rate between 76 and 89 cm. Before delivery, the uterine height reaches 32.0-38.5cm, and the abdominal circumference is 89-100cm.

However, due to various reasons such as the pregnant woman's physical constitution and eating habits, there are differences in fetal development. Some pregnant women's bellies become noticeably bigger in the third month of pregnancy, while some pregnant women's bellies still do not grow noticeably bigger in the seventh or eighth month of pregnancy. Experts say that there will be differences in belly size during pregnancy, as long as the fetus's various indicators are larger than normal. Pregnant women are advised to undergo regular pregnancy checkups. If they experience irregular vaginal bleeding, fever, dizziness, fatigue, severe vomiting, and other discomforts during pregnancy, they should go to the hospital for examination as soon as possible.

Growth rates of various parts of the uterus: The fundus grows fastest in the late pregnancy, the uterine body contains the most muscle fibers, followed by the lower uterine segment, and the cervix has the least. This is beneficial to the delivery of the fetus, because the contraction force of the uterus also decreases from top to bottom. From 12 to 14 weeks of pregnancy, the uterus will have irregular but painless contractions.

The fastest growth rate is between 20 and 24 weeks of pregnancy, with an average weekly growth of 1.6 cm. The growth rate slows down between 36 and 40 weeks, with an average weekly growth of 0.25 cm.