Help!! Am i pregnant?

Im so scared...i had sex on friday morning im pretty sure we used a condom but after when i peed it hurt so i looked it up and people say its normal after rough sex. Then i took 8 triple cs with my friends and i was dizzy and sick for about 3 days. I get my period usually early in the month around the 6th or 7th...2 days ago i had cramps like i was getting my period and today blood came out but im pretty sure its not my period its not the normal time so i looked it up and it said thats a sign of pregnancy and so id dizziness but i thought that wa just from the triple cs...so im confused and freaking out. Im soo scared..is my period just comming early? Could this also be from stress cause i got braces yesterday and was really stresaing out about how they looked. Is there anyother cause for this besides being pregnant please please please help!