Out of the approximately 2 million sperm entering the cervix, only about 1 million make it into the uterus. The rest are stopped by gooey mucus, or swim into dead-end channels inside the walls of the cervix. Out of the approximately 200 sperm that reach the egg, only 1 enters the egg to fertilize it.Click to see full answer. Moreover, how does sperm leave the female body?After ejaculation, sperm can live inside the female body for around 5 days. Once inside the female reproductive tract, the sperm cells must swim through the cervix and into the uterus to reach the fallopian tubes and female egg. It is a very long journey for sperm cells to make and very few survive.Also Know, how long does it take for sperm to reach the egg and get pregnant? The Sperm’s Long Journey A man may ejaculate 40 million to 150 million sperm, which start swimming upstream toward the fallopian tubes on their mission to fertilize an egg. Fast-swimming sperm can reach the egg in a half an hour, while others may take days. The sperm can live up to 48-72 hours. Beside this, what happens when sperm enters a woman? The man’s sperm enters the woman’s body through her vagina, then travels through her cervix and womb to the fallopian tubes, where an egg is fertilised (conception). The egg can be fertilised by sperm contained in semen or pre-ejaculate.What happens to your body immediately after conception?The egg becomes fertilized, moves into the uterus and implants itself onto the uterine wall. Cells begin dividing, and a fetus starts to develop. However, pinpointing exactly when conception begins is hard to do, because sperm can rest in a woman’s body for several days after ejaculation, waiting for an egg.