Who is the father?

Hi all, im hoping that you can help me. I had unprotected sex with my ex 3 days before my period was due. He never ejaculated inside me or even come close as i changed my mind and pushed him away. 3 days later i got my period as expected. I didnt notice anything different about it so i would say it was a normal period and lasted 5 days. 13 days after the start of my period i then had sex with my bf (we had got back together after a split). He did cum inside me and i did remain on my back for about 30 mins before getting up (this was done accidently but i believe this does help with conception.
My scan dates all date to the day for my boyfriend but i still have a little niggle of doubt and its driving me crazy. Who do you think is the dad?
Please help...Thankyou in advance

I would have thought if you had a normal period your uterus would have been cleaned out?

Also if your dating scans etc match your bf I would say that's the winner.

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I would have thought if you had a normal period your uterus would have been cleaned out?

Also if your dating scans etc match your bf I would say that's the winner.

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Thank you i thought the same but i just needed to hear it from somebody else. I have been researching online for days now and it seems that 3 days before my period is not even a fertile time...as i have a regular cycle. Thank you for you time to reply

As the opinion of a non-doctor, I would say it's 100% impossible for the other guy to be the father. While sperm get to the tubes within minutes to hours, it takes 6-9 days for implantation to occur after fertilization. I can't even imagine you'd have ovulated 3 days before your period. If you did, the egg would never have made it to the lining in time to implant and would have been flushed out during the 5 day-long period.