The semen is ejaculated into the vagina, although part of it flows out, but there is still part of the semen in the vagina, and there are a lot of sperm in the semen, as long as one sperm enters the uterine cavity and reaches the fallopian tubes smoothly, it will lead to pregnancy, so even though part of the semen flows out after the coitus, it is still possible to get pregnant and the possibility is relatively large, because under normal circumstances, every woman will flow out part of the semen after the coitus, so if you do not plan to get pregnant, it is recommended to use condoms. It is recommended to use condoms if you are not planning to get pregnant. When using condoms, it is important to note that condoms should be used all the way through, and that before using condoms, they should be checked for small holes, as this can also cause pregnancy.