The first three months after the implantation of the fertilized egg, you can have coitus.
After pregnancy, if the fertilized egg is implanted, and the development is relatively stable, the indicators are relatively stable, after the third month of pregnancy is allowed to have intercourse, but need to pay attention to the force and way of intercourse, so as not to affect the growth and development of the fetus.
The fertilized egg has already been laid, but if the embryo development is not stable or there are signs of pre-miscarriage, under the stimulation of coitus may be aggravated or even miscarriage may occur, so in the early stages of pregnancy can not coitus.
Women in the third trimester of pregnancy after intercourse, if vaginal bleeding abdominal pain and other related conditions, must promptly go to the hospital to clarify the development of the fetus, if necessary, the need for fertility preservation treatment, in order to avoid miscarriage.