hey! i'm a 14 year old who's biologically female, and i've been seeing some serious vaginal discharge. it's brown and sticky, but it doesn't really smell. the farthest i've ever gone during anything would be masturbation, once with a friend who gets recent check-ups at an std clinic with her mother. she's clean, so i don't think it's an std. i've heard that maybe it's my period, because i haven't started at all yet, but i'm not sure. i'm just super scared, and i don't feel comfortable telling my mom. please help?