Ejaculation or non-ejaculation during intercourse in a woman’s pregnancy does not have a direct effect on the development of the fetus. If sex is performed at an inappropriate time, it may cause premature labor or miscarriage. Because during the pregnancy of the woman to complete the body ejaculation, and will not cause another pregnancy, because after the pregnancy of the woman all the channels of conception has been completely closed, into the female vagina semen has not entered the female uterine cavity, so ejaculation does not have any direct impact. Because in the process of sex will be on the female cervix and uterus to produce a certain degree of stimulation caused by uterine contraction, if it is in the early stages of pregnancy, it is very easy to cause abortion. If it is in the later stages of pregnancy, it is very easy to cause premature labor, so during pregnancy, women can have sex in the middle of pregnancy, other time is not allowed to have sex.