When semen is deposited into a woman’s vagina during sexual intercourse, it contains millions of sperm cells. The sperm swim through the cervix and into the uterus, where they may encounter an egg and attempt to fertilize it.
If fertilization occurs, the fertilized egg will implant in the lining of the uterus, and the woman will become pregnant. If fertilization does not occur, the sperm will eventually die and be expelled from the woman’s body along with other vaginal secretions.
The cervix, which is the opening of the uterus, produces mucus that changes consistency throughout the menstrual cycle. During ovulation, the mucus becomes thinner and more slippery, allowing sperm to more easily swim through it and reach the egg.
The acidic environment of the vagina can be hostile to sperm, so the mucus provides a protective environment for them as they travel towards the egg. However, not all sperm will make it to the egg, and many will die along the way.
Overall, the fate of semen inside a woman’s body depends on a variety of factors, including the timing of intercourse, the woman’s menstrual cycle, and the viability of the sperm.