Hi I have a conception question. My first two ultrasounds were at like 6or8wks and then my last one so far was at like 19wks. My due date, which is Jan9th, never changed since pregnancy so far. I am 24wks my last period was projected as April 4th due to ultrasound and due to my knowledge my MISSED PERIOD was May. I had a one night stand March 21st but weeks later presumed with my original sex partner of a yr and a half. Due to my ultrasound EDD I would have conceived around the 13th-19th or so in which I was with my original sex partner. Should I be sceptical about the March 21st one night stand being my baby daddy?