Who got me pregnant?

Please dont judge me im devastated and terrified. Ive been with my bf for 3years had a miscourage early january this year ive been on birth control since them until the month of april. My periods started from the 22th of april and ended 24th of april,My bf came to visit on the 26th and left on the 1st of may. We can have sex 2-3 times a day. On the 4th i had a once of thing with some guy 1st da condom broke n when we went for another round we ddnt use protection twice.I did told my bf about me cheating and he dumped me cos he said it was impossible dat his da father cos i was far from ovulating and he said he wont do the partenity test and i tried asking the other guy but he said he wont also do the DNA because i never wanted him and he doesnt want to ruin his relationship with his gf.I know my bf still loves me and he will only give me another chance if the baby is his but how am i supose to know if both guys wont go for partenity test.Waiting is really killing me just to see who the baby resembles. My bf is too dark like dark skinned and da ada guy is light skinned but at my bfs family they are all light skinned except for him and his dad. Im 25weeks and 4days along and did my 1st scan at 22weeks and 4days and tried counting back to see when i concieved and it pinpoint the 1st of may. I know some apps says i was likely to concieve between the 8th-10th and it really freaks me out. According to my LMP im 26weeks,6days. .Please help!