I think im depressed?

well i just found out my sister who i havnt seen in years has drug induced phycosis its a type of schizophrenia, my mom is severly bi polar but i really dont want to see them i never really have i dont even know y i dont want to eat and everything gets me angry ive never wanted to hut anyone but when someone like my mfoster mom gets me mad i go into a rage and jump up from may chair it only lasts a few secounds but i get soo mad i dont hear voices but i argue with myself. (not out loud btw) can someone please explain to me what is going on? ive never really wanted to see my sister or my mom again after i got taken away. ive gone to counsulling BUT I DONT EVEN KNOW WHATS BOTHERING ME! what do i do...