Try not to have sex in the early stages of pregnancy, which can easily cause miscarriage. In early pregnancy, the placenta of the embryo has not yet developed, the fertilized egg is not stable in its bedding condition, and the connection between the placenta and the uterine wall is not close enough. When having sex, excessive impact will easily cause the pregnancy sac to peel off and bleed, and sex will cause contractions, which will easily lead to vaginal bleeding, abdominal pain and other symptoms of pre-miscarriage in pregnant women, and in severe cases, it will lead to miscarriage. If a pregnant woman’s immunity is low, she is also susceptible to bacterial infection during sex, leading to vaginitis. Therefore, in the early stages of pregnancy, for the health of pregnant women and the fetus, sex is not recommended.