Sexual intercourse is not allowed in the early stages of pregnancy. This is because in the early stage of pregnancy, the implantation of the gestational sac into the endometrium is not stable enough and stimulation of the uterus can easily lead to preterm miscarriage. In the first trimester, when the embryo is developing, the cells are dividing and the organs are not yet fully set, sex will stimulate the uterus, which is not conducive to the development and growth of the gestational sac and embryo, and may lead to malformation. In the early stage, the resistance of pregnant women is poor and their body is weak. Having sex too early and too often can cause vaginitis and cervicitis. Inflammation stimulating the cervix can cause leakage and cervical mucus. Especially if you have had a miscarriage, it can lead to habitual abortion. It is recommended to avoid sexual life as much as possible in early pregnancy.