Pregnant or no?? PLEASE READ

Okay so very complicated story.

I had unprotected sex with my boyfriend when I was ovulating and i’m really panicking.

now i’m 10 days late! I took a pregnancy test a few days ago and I was negative.

i haven’t had any signs of a period other than lots of cramping and this afternoon I wiped and it was like brown-ish discharge or maybe period blood? I don’t know but do you think my period is just starting?

i’ve been very very stressed because of college so maybe that is it?

what are your thoughts?