The fear that a woman can't get pregnant even if some semen is expelled from the vagina is not new, and has triggered one of the most common bits of advice women who are hoping for a baby get. You guessed it, it is the advice to place a pillow under your buttocks and lie like that, with an elevated behind, for 20 or 30 minutes after sex. I don't know about you, but I think that totally messes with those special post-coital moments!
The simple answer to the question of whether you can still get pregnant when sperm comes out us yes (if you have sex at the right time). Some sperm always stay in, and if the human race relied on women lying with their butts in the air for half an hour after intercourse, my guess is that we would have become extinct a long while ago. If you really feel like trying to keep those swimmers in, why not try inserting a Diva Cup? The Diva Cup is a reusable menstrual cup that collects fluids and obviously doesn't allow them to come out.
This will prevent leakage and may give you the idea that you are doing something proactive to get pregnant. By the way, if you were wondering whether you should put a pillow underneath your buttocks to increase your chances of pregnancy, studies have shown that this is not at all effective. We thought you might like to know.