The posterior wall of the placenta is the back wall of the uterus where the fertilized egg is deposited, and the enlargement of the stomach can be seen from the outside at the latest when the pregnancy is in its 5th month, which is called the “showing of pregnancy”. If the fertilized egg is deposited in the back wall of the uterus, due to the growth and development of the fetus and the increase of amniotic fluid, it will cause the uterus to swell, and the bottom of the uterus will be located between the umbilicus and the umbilicus at the latest, usually around the 5th month of pregnancy, and at this time, you can feel the bottom of the uterus in the abdomen, which is known as the apparent pregnancy. However, the specific time for each person is different. If the pregnant woman has sufficient nutritional supplements during pregnancy, the uterus can show at around 4 months; however, if the nutritional supplements of the pregnant woman are not so sufficient, or the growth of the fetus itself is slow, it may take around 5 months to show pregnancy. Pregnant women must pay attention to rest, proper nutrition, especially to eat more protein-rich foods to promote the physical development of the fetus. And pay attention to regular checkups and keep a happy mood.