I had sex with this girl we used a condom may have broke anyways she took plan b 17 hours after and she had her period ended 2 days ago what are the %

Safe: To put your mind at ease even more, you can do a home pregnancy test in about a week, and if that is negative you are about 100% safe.

Plan B: If she had an actual period then she should not be pregnant. Plan B One-Step can reduce your risk of pregnancy by up to 95% if used within 24 hours of sex. If taken within 72 hours it can reduce risk of pregnancy by up to 89%.