My LMP was October 28, 2013 . I was ovulating the 14th, 15th, and 16th of November. I had unprotected sex November 17th with someone and November 29th with someone else. I was suppose to start my period November 28th and didn't' by the 29th my breasts were really tender. I had an ultrasound March 4, 2014 that calculated me at 16 weeks with a due date of August 17th and conception date of November 24th. Which guy, (the November 17th or November 29th), do you most believe is the father?