Normally, the uterus grows out of the pelvis after the third month of pregnancy and the woman’s belly increases in size. In a few cases, if the woman herself is obese, or pregnant with twins and other conditions, the belly enlargement may be more obvious and increase earlier. The main thing for a woman to do after pregnancy is to have regular ultrasound checkups. The development of the fetus is in line with the gestational week and there are no abnormalities, so it can be observed for the time being. Women should pay attention to proper rest after pregnancy, avoid bacteria, viruses, drugs and other adverse stimuli, also avoid smoking, alcohol, eat more nutritious, easy to digest food. Appropriate activities to exercise and maintain a relaxed mood are conducive to their own nutritional supply and the growth and development of the embryo. A very few women may not have a noticeable increase in belly size due to their thin physique or poor diet.