depression

I'm 15 and a sophomore in high school. in all honesty, I think I'm depressed and have severe anxiety. I question my existence and thought of suicide. I've cut before but not deep enough for scars. I've never been able to dream about my future because I feel as if I don't have one. I question every move I make and am extremely insecure. I'm 5'2 and 94 lbs. I don't know what to do anymore. I don't want to feel like this...