The belly usually appears around four months of pregnancy, but the exact time varies from person to person because the thickness of the fat layer is different for each person. After pregnancy, due to the continuous growth and development of the fertilized egg, the volume of the uterus will increase significantly, due to the pressure on the abdominal wall, generally in about four months of pregnancy will show the stomach. However, the exact time varies from person to person, because each person’s own situation is different. If the fat layer is thicker, the belly will appear earlier, usually around three months. If the fat layer is relatively thin, the time to show the belly will be delayed accordingly. In addition, during pregnancy, pregnant women should pay attention to rest, do not overwork, do not do strenuous exercise, so as not to cause preeclampsia; if abnormal symptoms, need to consult a doctor in time.