Pregnancy usually begins to show around the fourth month of pregnancy, but there are individual variations. The term “labor prognosis” refers to the swelling of the abdomen as the weeks of pregnancy increase and the uterus enlarges. Generally, the bottom of the uterus reaches between the umbilicus and the umbilicus at around 4 months of pregnancy, when some pregnant women start to show signs of pregnancy, which is manifested by a slight bulging of the abdomen, which can be seen from the appearance of the pregnancy. However, there are individual differences in the time of pregnancy, and for obese pregnant women, the time of pregnancy will be extended appropriately. Four months pregnant is already in the middle of pregnancy, at this time in the doctor’s guidance to adjust the diet structure to ensure balanced nutrition, such as eating more protein, iron, calcium and vitamin-rich foods, such as meat, eggs, milk, fish, fruits and vegetables, and so on. You should also pay attention to maintain a moderate amount of moderate-intensity physical exercise, such as yoga during pregnancy, to ensure that the body grows appropriately.