Methods of contraception are subject to (normally) a woman's way of getting herself some great sex without getting pregnant. Many women take the pill while others resort to using condoms, hormone shots, the ring and the patch.

But what studies today confirm is more prevalent than you thought. A paper from the Duke University Medical Center suggests that the "pull-out method", also known as coitus interruptus, was tied to many unintended pregnancies.

A new study conducted by Dr. Annie Dude (seriously, her real name) found that 31% of women surveyed used the pull-out method in the past two years. 21% of those women reported an unintended pregnancy - a higher number than the unintended pregnancy rate of women who used non-pull-out methods of birth control (13%).

"We found that people tend to use the withdrawal method when they're not really planning ahead," said Dr. Dude, which makes sense to many of us anyway.

But the bigger issue is that the results showed that more women than previously thought are using this withdrawal method, which means that they're using a not-so-effective method of contraception, while risking sexually transmitted diseases.

So mayhaps the pull-out method is not one of the better methods after all. It's time to re-evaluate your contraception methods; if not for sexual health reasons, to make sure you don't get pregnant before you actually want a pregnancy.