Okay so about a week and a half ago I had unprotected sex(dumb i know) with the guy Im seeing. We got caught up in the moment and he came in me. Ive been on birth control since august but I dont remember if I took my pill that day or not. Its not in the package but for the life of me I cant remember. I took the Plan B about 52 hours after the sex. I was supposed to start yesterday but never did. Today its just been brown old blood with the slightest cramping. Usually my periods are bright red from the start with intense cramps. Do yall think there is any chance I could be pregnant?? I took a test last week but the first errored out and the second look like it had a vvvvvery faint line. Also when i checked my app that was the highest percentage chance of getting pregnant. I know it was dumb and I dont plan on it happening again. Im honestly just looking for advice here or any previous experiences would be great.

Thanks girls!