I m pretty sure I already know the answer I m going to get but here it goes; My boyfriend and I broke up the beginning of March (2012) and I had sex with someone else, I stopped having intercourse with them sometime around the middle of March. My boyfriend and I got back together around the 20th of March and started my period around that time as well (I remember being on my period on the 24th, as that s my birthday). I was with my boyfriend from then on and found out I was pregnant towards the middle-end of April. Is it possible that it I could have been pregnant for the random guy during my period? I had my son on December 30th, 2012 but my due date was December 25th. I m only curious about this now because my boyfriend and I have had another boy since my December baby and my children are opposites. I know genetics are crazy and that siblings aren t expected to look the same but my friends have children that share similarities and mine are completely different.