I am on birth control, and have been for 3 years. I had sex on Friday and twice on Saturday. We did not use a condom any of the times, but he did pull out before his final ejaculation. I know men pre-ejaculate as well, though, and I am concerned. I take my birth control everyday, but do not take it at the same time. It usually varies within a 4 hour time frame. I am wondering what my chances of pregnancy are. I considered taking Plan B (Morning after pill), but haven't yet. I know you can take it up to 5 days after sex, so I could take it until about 11PM tomorrow night. I am supposed to get my period tomorrow, though, and am not sure if I should wait to see if I get it first. Also, is there any chance I could be pregnant even if I do get my period tomorrow? I didn't know if that was possible if I had sex this close to my period. Please help me.