You can also get pregnant if semen comes out after intercourse. During intercourse, a man ejaculates about 3-5 ml of semen, which contains a very large amount of sperm. Even if some of the semen flows out, there will still be sperm left in the vagina, and there is a possibility of pregnancy. Moreover, before the semen flows out, some of the more vigorous sperms have already entered the uterine cavity, and the flow of semen has no effect on pregnancy. If the woman has eggs discharged at this time, and the fallopian tubes are open and the vaginal environment is normal, the chances of pregnancy will be very high. If there is menopause and a positive pregnancy test, pregnancy can be diagnosed. Clinically, if a woman does not want to get pregnant, she needs to take effective contraceptive measures, such as oral contraceptive pills, IUD, wearing condoms and so on. Contraception through semen flow out after intercourse is not effective.