NO JUDGMENT BUT I CHEATED

Me and my ex went through some stuff , he cheated and I cheated . Anyways moral of the story .. I’m currently 24 weeks pregnant . I am due feb 1. I’m just now starting to worry I may not know who the dad is . When I cheated I used a condom , but I can’t for the life of me remember when that day was . I took a FRER at what I thought would be 9 DPO and I got a FAINT positive , I went to the doctor got a blood test done and they said my levels were 5, and they didn’t even want to consider me pregnant ... with each day my tests got darker and darker and I finally got an ultrasound . My baby was measuring a week ahead and Still is ... I didn’t have sex with anyone but my ex around the time I ovulated (or was supposedly ovulating) and it took me a week following my blood test to get a positive on a dollar tree test and a clear blue and a digital .. prior to this they were all negative . But FRER was giving me faint positives .. a.m. I over thinking ? I really don’t see how it isn’t my exes baby based on all this but still worries me . Please no negative comments , I made a mistake I’m only

Human .