If a pregnant woman is around forty days pregnant try not to have intercourse, the condition of the fetus is not yet stable, the fetal heart is not yet formed, the placenta is not yet mature, and the connection between the placenta and the uterus is not very tight, which can easily cause miscarriage. In about a month of pregnancy, intercourse is likely to lead to the possibility of miscarriage or other gynecological inflammation. If a pregnant woman has intercourse in about forty days, it is recommended that she go to the hospital for a hormone level check or ultrasound examination as soon as possible, and pay close attention to whether her body has symptoms of bleeding. It is recommended that pregnant women should try to relax and keep a comfortable mood in their daily life, and pay more attention to the hygiene of their pubic area. If there is a special need, try to go to the hospital for a check-up and ask the doctor if you need to take birth control pills to ensure the health of the baby and the pregnant woman.