I'm having a brown discharge from my vagina.. I've never had my period! HELP!!! ?

Okay, so for three or so days I've had some brown discharge in my panties. I'm 15 and I haven't had my period-ever! Awkward sentence approaching.. And, I had some of this "goop" (for lack of a better word) hanging from my vaginal opening. This is really scaring me . Help!