Generally, pregnancy starts to show in the third to fourth month of pregnancy, and it is impossible to generalize due to the different conditions of individual pregnant women. In general, the size of the fetus is small in the first 3 months of pregnancy and will not appear to be pregnant. Some pregnant women who are thin, have weak abdominal sebum, or who are pregnant with twins may show signs of pregnancy around 3 months of age. Most pregnant women will start to show at around 4 months, depending on their own situation. In the first trimester of pregnancy, you can take folic acid supplements, such as cabbage, carrots, broccoli, etc., or oral folic acid tablets, to prevent congenital neural tube defects in the fetus. In the early and late stages of pregnancy, coitus should be avoided to avoid affecting the growth and development of the fetus. During pregnancy, pregnant women should follow the doctor’s instructions to have regular checkups in order to understand the growth and development of the fetus. If there are any abnormalities during pregnancy, you should consult a doctor in a timely manner.