am i pregnant?

i had sex with my bf on my period and we didn’t use a condom because i’m on the pill. i missed a pill 4 days before we had sex but i took 2 the next day. it’s been about a week and i’m now experiencing brown vaginal discharge and i’m worried that i may be pregnant. according to this app when i remove that i’m on birth control it says i am ovulating. i’ve read that stress can also cause brown vaginal discharge and i’ve been very stressed lately. it could also be an indicator of gonorrhoea but i don’t have any symptoms and he doesn’t have it. i’m very worried and confused about what to do. could anyone give me some insight?