Most of the sperms stays in the female, They do not swim back out.It only take one sperm to fertilized a egg and therefore a new pregnancy. The sperms do not swim out. True some of the sperm in the last part of the ejaculation may on the partners thighs and legs.
The vagina , accepts the penis during sexual intercourse and receives the male's sperm when he ejaculates, hundreds of millions of sperm may be deposited into the vagina, typically only a few hundred reach the site of fertilization . During the first half of the menstrual cycle, particularly as the time of ovulation approaches, the cervical mucus is abundant, clear, and watery. At this point, it is very receptive to sperm penetration and survival. When sperm are deposited in the upper vagina during sexual intercourse, the moving sperm rapidly swim into the cervical mucus, where they may maintain their motility and fertilizing ability for several days. The then travels to the uterus.
The uterus is approximately three inches long and is the size and approximate shape of a pear ,It is a solid, muscular organ that contains a triangular-shaped cavity lined by a tissue The fallopian tubes are attached to the uterus at one end, with the other end open and lying adjacent to the ovaries. The sperm will died and be absorbed my the female's
Body. Then removed as waste from her body.
Always remember your penis is unique, just like every man.