So, yesterday went I went to the bathroom, the bottom of my underwear were stained brown. I shrugged it off, even though I was curious. When I woke up today, nearly the whole entire front of the underwear was stained brown! When I "wiped" myself with a tissue, I also found blood and this strange, pudding-like black substance. Please help! Does it mean I'm starting my period or is it a health problem? I'm scared to tell my mom.