STDs aka STIs. Yikes. Definitely something to think about. But if you arm yourself with the right information and get tested, you can put an end to the guessing game and feel confident in your choice to stay informed. Check out this master list of STIs for all facts. And remember, if you test positive for any STI, you should inform all recent sexual partners (past 60 days) so they can get tested and treated too. STIs are just one part of the story, learn more about your birth control options and deciding if you are ready for pregnancy.