I'm not going to say that i completely understand what you're going through but i do to a point. Im 19 years old and i sort of had the same problems you're having now. I felt so trapped and alone at home. I was severely depressed and ...lets just say messed up. I had to get out because i could no longer take it. I literally had to escape in the early morning hours, looking behind my shoulders the whole way. I've been gone for a little over a month now and i don't regret it at all. Although i do miss my younger brother and dog dearly,I'm trying to start a whole new life. I guess what i wanted to say to you is that don't give up...fight for what you want in life, your dreams...thats the only way you'll make it. I hope things will look better for you soon. You have your whole life ahead of you so live it.
btw..your more than welcome to check my profile and leave a message