Okay. I'm in a situation here. I'm pregnant and had a few questions about paternity. I had my period Sept 22nd, 07 and had unprotected sex with a friend Oct 4th(i was fertile) I had an EARLY period Oct 15th, 2007. Lasted normal days. I met my current boyfriend Oct 17th and slept with him Oct 20th, 25th, 26th, and 29th . My due date is July 21st by Ultrasounds...was july 21st, then july 25th...Doctors and nurses on that lil pregnancy wheel says conception would take place Oct 29th. Whose most likely to be the dad?? March 17th I had an U/S and I was 21weeks 6 days. My OBGYN said i would have conceived very late october/ very early november. Should I trust her and stop worryin or should i still be concerned about paternity?