Me and my girlfriend are worried sick. We had unprotected sex and I pulled out. I didn't think much of it until she told she hasn't started her period yet so then I started questioning whether I pulled out or not. we waited a day after she told me to get Plan B. So, she took Plan B during her period which never came .. if that makes sense. I have been trying to find out more about this but no one on the internet seems to have had the same problem. And I don't want to talk to her about it so she won't worry any more than she has to. Help?