During the 40th day of pregnancy, couples are not allowed to have intercourse. Since the fertilized egg is not fully developed during this period, sex in this case can easily stimulate the embryo, which often leads to the occurrence of diseases such as pre-eclampsia or miscarriage, which can cause serious damage to the woman’s health. It is advisable for pregnant women to avoid sexual intercourse during the first and second trimesters of pregnancy. If you have sex in the middle of pregnancy, you need to pay attention to choosing the right way, and also pay attention to moderation, the activity should not be too intense, in order to avoid the impact on the abdomen of pregnant women, which may cause premature delivery. It is recommended that pregnant women pay attention to rest during pregnancy, ensure adequate nutrition supply and regular pregnancy checkups.