How do you get pregnant from precum?

Some sperm get in: A guy's sperm are trained and ready to go at a moment's notice, while they sit waiting in the epididymis just outside each testicle. Sometimes, enough sperm get out into the "precum", but all you need is one single sperm to fertilize the egg and start a new baby. So, occasionally, one can get pregnant from "precum".

Pre-ejaculate: Although pre-ejaculate has a lower concentration of sperm than ejaculate- it can none- the- less fertilize an egg.