We had sex on the 7th and again on the 18th of April.

Based on my LMP (I am highly irregular) I would currently be 10 weeks and 5 days. My first ultra sound gave me a due date of 1/10/2019 but that was before they could see the baby. Baby is now measuring at 9 weeks today making my due date 1/06/2019.

From my LMP I would have a due date of 12/25/2018 and now my due date is 1/06/2019 based on crown to rump measurements meaning conception has now changed to dates we didn’t have sex. (3 days earlier than intercourse). I can believe that baby is measuring 4 days bigger but I’m having a hard time believing it would measure 12 days younger.

Is my conception date still around the 18th ? Did I ovulate later than expected. We also had sex March 31 if that helps any. I’m just confused. How old is my pregnancy ?