In general, the belly enlargement is not obvious at the beginning of pregnancy, and it starts to grow slowly in the 3rd to 4th month of pregnancy. However, due to the physical condition of pregnant women, diet and other reasons, there are differences in the development of the fetus, some pregnant women in the third month of pregnancy, the belly will obviously become larger, while some pregnant women in the seventh or eighth month of pregnancy, the belly still does not increase significantly. The experts said that the size of the stomach during pregnancy can vary, but as long as the fetal indicators are normal. The following things need to be noted after a pregnant woman becomes pregnant: First, pay attention to safety. After a pregnant woman becomes pregnant, her body’s center of gravity changes and she walks unsteadily and gets tired easily, so she needs to pay special attention to safety. Second, moderate exercise. After pregnant women become pregnant, the body slowly becomes heavy and lazy, more walks, more moderate gymnastics, can enhance blood circulation and immunity. Third, pay attention to sleeping position. Pregnant women’s belly increases, it is advisable to take the left side in the middle and late stages, so as not to oversize the uterus compression of the aorta, affecting sleep.