Okay so me and my girlfriend had sex about 2 days ago, and it was her fifth day of bleeding/of her period. Stupidly, I did not use a condom, but was able to pull out and get her a Plan B-One Step pill about three or four hours after sex. Her cycle is relatively short, around 18-20 days, so she will be ovulating around the nine or tenth day of her cycle, or five days after her period had ended, since it stopped after we had sex. This is very scary and i'm extremely scared for her and me. What i'm wondering is if the Plan-B One Step will still be active if she ovulates five days after we had sex (one her period)?