I NID HELP I DONT NOW WHATS HAPENING TO ME?

um helo guys,mi name is angela and im 16 a while back i startet having problems,theres blod ing out of my vspecial girl place sometimes i cant tell mi parent they not care about my and they wud put my on adopt :(( mi doctor keepd saing something about mentruaishion and i dont now what hes talking about plz help im DESPRET help my plz