Why am i feeling like this please answer :(?

im 15 and lately i have been getting a lot of headaches and dizziness and i also think im suffering from depression i feel awful and i get angry really easily im crying at the moment i dont now what to do i feel like hitting myself pulling my hair or anything i hate myself i think im fat i weigh 60kg 9and a half stone i feel fat and i just don't like myself any more i tried to burn myself lastnight i scratched myself in maths cl today with a comp because i hate myself..i just want life to end i really could do with it at the moment i don't see myself getting any where and i don't even know how i got depression i just fought with my parents at 12 and tried to k-ill myself at 12 and that's when i started all this....i need help im going to a councillor tomorrow for the second time but im really nervous in there and i feel like crying when im in there im stupid i cant talk to any one..i hate people asking me questions and i hate talking to people id rather be in a dark room on my own so i could feel happy.. i dont have much interest in drinking anything or eating anything i feel like i want to go annorexic and im thinking of starting it...