An important aspect of fertility and pregnancy is sperm, and the lifespan of sperm after ejaculation completely depends on where it's living. How long sperm live depends on where the sperm are deposited. Sperm inside the vagina can live within cervical mucus or the upper genital tract for three to five days, allowing fertilization to occur so long as the sperm are living.
As anyone in a pregnancy scare has probably wanted to know, errant sperm can live inside the body for three to five days—provided the cells are in a warm, protective environment, like the uterus or cervix. But what about inside the mouth? In it, she describes how a swab of a medical school classmate's mouth showed that sperm was living inside her oral cavity.
Semen is a sperm carrier in the male reproductive system. Sperm takes about 3 months to mature, and has a short life after excretion. The sperm life entering the female reproductive system is longer than that without entering.
Update: A previous version of this article contained quotes from an expert whose credentials are now in question. We have reached out to him for confirmation of those credentials and have not heard back. You can read Gizmodo's investigation hereand his response here.
Ejaculated sperm remain viable for several days within a woman's reproductive tract or in nutritive liquid culture medium in a lab setting. Fertilization is possible as long as the sperm remain alive — at least five days. Mayo Clinic does not endorse companies or products.
Semen has million sperms. After ovulation, a sperm is needed to go into the fallopian tube, which leads to the beginning of a new life. Listening to this seems like it is easy to conceive.
The length of time they stay alive has a lot to do with environmental factors and how fast they dry up. If you ovulate shortly after you finish your period, the sperm may still be alive and can fertilize the egg. Learn more: Can you get pregnant if you have sex on your period? Keep reading to learn more about the lifespan of sperm as well as sperm motility.