Light headed and on and off spotting 8 days before period.

two days ago i had a bit of light pink blood when i wiped. later that day i had some pelvic pain. the night before, i had unprotected sex where he came in me. i am WELL aware i can’t get pregnant after a day but i thought it might help towards any suggestions.

this was 10 days before my period was due. now it is 8 days before my period is due and i have had now brown spotting mixed with discharge. very light and on and off all day. and today i’ve been feeling very light headed.

the last time i had sex (before the other day) was two-three months ago with the same guy. my period ended almost 2 weeks ago. i’ve never experienced anything like this before and i am like 99% sure i’m not pregnant. the 1% is that i’m the next virgin mary! 😂

any suggestions will be v much appreciated. thanks !