That is because a woman’s body is just the right environment for sperm! Inside the cervix, fallopian tubes, and uterus, sperm can live for up to as long as five days. However, most sperm will die within one or two days even if they are inside of the uterus.Sperm that are inside the vagina will usually die within a few hours.ince sperm can live in a woman’s body for up to five days, and the egg can only live for 12-24 hours, it makes sense to have the sperm “ready and waiting” when the egg is released, if a couple is trying to get pregnant.