In general, when women are about four and a half to five months pregnant, they can clearly see their belly bulge, which is commonly known as pregnant, but there are certain differences in the time when each pregnant woman shows her belly, which is related to various factors such as the position of the pregnant woman’s uterus, the development of the fetus, and the thickness of the fat layer of the belly. Women with an anterior uterus are more likely to see a protruding belly than women with a posterior uterus, and women with a fatter body type and a thicker belly fat layer are also more likely to see a belly. The fetus is well nourished, develops faster, and the uterus will be relatively larger in the same months, making it easier to see the belly. In the first trimester of pregnancy due to the small development of the fetus, the uterus is still in the pelvic cavity, so it is not easy to see the belly, after entering the middle pregnancy fetal development faster, the uterus from the pelvic cavity into the abdominal cavity, so it is also easy to see the belly.