I had my period August 6th 2013 and I had sex with my first partner August 22nd 2013 (unprotected) I then had sex again the 28th of August but we used protection and he says nothing happened but I am really freaking out about it.. what are the possibilities of this being guy number ones baby.. my ultrasound dated a week earlier I went September 26th and she told me I was 6wk 2days but I don't understand how it could be if I know when my real potential conception date was which I believe is the 22nd of August ! Please help .

