[tippy21]

I had sexual intercourse with this guy back on July 23 2011 and got pregnant and my due date was April 12 2012 I had her on April 13 2012 is it even possible for him to be the father?

[dontknownuthin]

Yes, it's possible. The nine months start with the beginning of your cycle, not the date of conception. And, it's not exact - some people deliver early, some late. Calculations for due dates are approximated as well - the reason most people do not deliver on their actual due date.