FACT: Sperm can live in your uterus and fallopian tubes for up to five days. Although you are most likely to become pregnant mid-cycle (near days twelve to fourteen, when you ovulate), each woman is different, and your chances of conceiving are not limited to that window. To be safe, you must consistently use your birth control method as prescribed, no matter where you are in your monthly cycle.
This is just one of many "contraception misconceptions," according to Dr. Roshini Raj, MD, assistant professor of medicine at NYU School of Medicine in New York, and author of What the Yuck?: The Freaky And Fabulous Truth About Your Body. Here, Dr. Raj sets the record straight. Click to find out if other things you "know" about birth control are really true!