OK I am in a little dilemma here, I am trying to figure out who is most likely to be the father of my baby, My due date is October 30, I had a ultrasound at 7 weeks 4days on the 17th of march and when I asked the doctor she said I most likely conceived around the 15th of February but that does not make sense with the dates. I am unsure of my Lmp but my cycle is usually 34-35days and I know I got my period sometime after January 18th, with the dating ultrasound she said January 24th but that's all based on a 28day cycle but whatever the problem is, is that I had protected sex with a condom on the 2nd of February then I had unprotected sex on the 7th of February and pretty much everyday after.