What's your opinion on this?

Hello, I am fourteen years of age and I have Multiple Personality Disorder, ADHD, anorexia, and clinical depression. My parent's have taken me to tons of different doctors, and the Seattle Washington Hospital just basically said "He's clinically insane." I can't concentrate, and I always have suicide on my mind but I'm too scared of death to actually do it. I tried smoking marijuana and it gave me my apatite, usually I get a stomach ache if I eat so I don't eat for days at a time. It also calms me down so I don't think so deep into things and I feel more in control of my mind. I'm prescribed an amphetamine by doctors that is supposed to help but all it does is makes me high and takes away my apatite even more. I mean, sure it makes me feel good but marijuana helps in so many more ways than the amphetamine does. My parent's don't approve of me smoking it, and I know it's illegal.. Can I just get your opinion on the situation? I really appreciate it (: