We all know that in order to get pregnant, a sperm needs to fertilize an egg. It sounds simple enough, but there’s more to it than you might think.
If you have unprotected sex in your fertile window, you might assume that you’re guaranteed to get pregnant. In fact, there’s only a 10% to 33% chance of getting pregnant (depending on how close to ovulation you do it), which shows there are a fair few hurdles standing in the way.
If you’re keen to clue yourself up on all things conception, you probably want to know the details: How long does it actually take for sperm to reach the egg after sex? What does the journey involve? And how many sperm can you realistically expect to make it all the way?
To answer all these burning sex ed questions (and more), we dug into the research and spoke to fertility expert, reproductive endocrinologist, and Flo Medical Board member Dr. Tiffany Jones for a fascinating glimpse at what really goes on inside after sex.