If I had an u/s at Dec18 5w4d with a due date of August 20 then one on Jan 8 8w4d due date of Aug 20 then on March 4 was told I was 16w2-3d wit a new due date of Aug 16. When did I conceive and which is more accurate? I had sex with my ex early in Nov and he did inside me. Then On Nov 17 I was talked/forced Into sex, he did not inside me he pulled out. I do recall having to have had bleeding during that time that I think started the 13 of Nov. Be fore then my last period had been Oct 26. On November 24-25 I had gotten back with my ex and had sex he cummed in me both days. When did I most likely conceive ? Who is the father? Im scared it's the other guy. Me and my ex are together and in my heart I believe it is his I am just so scared.Please help ! Im having a baby boy if that's any help. I really think I ovulated/conceived November 25 but I'm not sure so please help