Help me math

Ok I figured yall were the best place to help with math and suggestions

We aren't exactly trying but we aren't stopping anything either. I had a baby (5/13/25) and didn't have a cycle until April 8-14 very very heavy and 2x as long as prebaby cycles.

Ovulation was estimated was 4/21. We had sex 4/19 or 4/20 do definitely in the window and he did not pull out. We also had sex again 4/22 or 4/23 and he did then (but I think he wasnt quick enough and so didnt keep it all out) my period was due 5/5. Before baby I was super reg to the day and always had it in the evening, so like down to the hour even. Anyways I had a very small amount of pink 5/4 when wiping that only lasted for a few hours. I tested that morning to check (before the pink) and of course it was neg. Ive tested today with one of those $1 dollar general tests and neg again today and of course still no period. So is there a possibility that I am pregnant just not able to test pos. Anyone with experience on this topic?