Well I had a question just in October of 2011 I had sex with a guy while I was broken up from my boyfriend and I had my normal period maybe about a week later about oct 10 and me and my boyfriend got back together maybe the middle of October I missed my November period I am pregnant my due date is aug 16 and it seems wrong but I was wanting to see when I conceived? If I can get help please!

Unfortunately dates are merely best guess.
The ONLY sure-fire method to determined paternity is a DNA test AFTER the birth.

Thanks I might have to