I had sex with guy 1 on Sept. 13th, 2008. The condom came of in me during sex but he quickly realized it and stopped. I believe I started my period on Sept. 28th. On Oct. 4th I had sex with guy 2. We did not use a condom and he did not pull out. I had sex with guy 2 again on Oct. 11th. On Oct. 30th I found out I was pregnant and then I had an ultrasound on Nov. 25th that said I was 6wks 5days pregnant. So I guess my question is could guy 1 have anything to do with this pregnancy? I believe that was my period because I bled for a week but I hear that some women experience implantation bleeding. (this is just to give more info on the previous question)