Pregnancy shows around 4 months, when the belly gets bigger. However, every pregnant woman is different in terms of weight and thinness, and the time to show is also different. At the end of the 12th week of pregnancy, the uterus gradually moves from the pelvis into the abdomen. Just beyond the pelvic cavity can not be seen when the abdominal bulge, as the fetus grows, the uterus is also gradually enlarged, generally to about 4 months of pregnancy, pregnant women can see the abdominal bulge when standing. However, there are individual differences in each pregnant woman, generally fat pregnant women due to their own abdominal fat, abdominal bulge is relatively less obvious; if it is thin pregnant women, abdominal bulge is generally more obvious. Pregnant women should pay attention to strengthen the nutrition during pregnancy, maintain a healthy lifestyle, to provide a healthy environment for the growth of the fetus. Pregnant women should also undergo regular checkups, and if any abnormalities occur, they should be dealt with in a timely manner under the guidance of the doctor.