i've just come back from a music festival full of fairly heavy drinking and when i returned, i woke up very early the next morning in a lot of pain to pee, i went and it didn't hurt as much as expected but i noticed brownish blood exactly like what you get at the end of your period. i had cramps for the next two days and i've been moderately bleeding for the past four days (not brown blood anymore though) and my period's not due for another week. i'm 17 and sexually active which makes me worry that i may have been pregnant for a very short amount of time and have miscarried. i haven't been irregular at all in the past which makes me think it could be this. what do you think?