Teenage Pregnancy

I got drunk last Sunday and this guy took advantage of me. Yes it was an unprotected sex and I couldn’t push him off me. It’s been six days and I just saw drop of blood on my underwear a bit brownish and there’s bright red color to my pee. Do I consider this as a sign that I’m pregnant? He didn’t put it in and he just kept rubbing it on my vagina. I really need help since it’s been bothering me at work as well. Never wanted this to happen. If I am actually pregnant what do you guys advise me to do since I’m not ready for a baby yet and I have university in March. Please help!!!

Update: Thank god I'm not pregnant, I got my period!!!