Sperm Survives Inside Women for Days: A waiting game for babies Did you know that when a man and a woman have intercourse, the tiny cells called sperm don't leave right away? It's true! Sperm can stay inside a woman's vagina for as long as five days. They hang out there, waiting patiently for the woman's body to release an egg. So, why do they stick around for so long? Well, it's all about making babies. You see, a woman's body releases an egg once a month, and that's called ovulation. Sperm...