Why do you want to go to college? What are your goals for your future and employment? How have you made it through high school thus far (meaning what are your coping mechanisms currently)?
I would agree with the above poster that a mental health professional should be helping you work through coping mechanisms now before trying to head off to college on your own. If you lost 30 lbs because you cant even eat or go to the bathroom in your own house, this is a huge hurdle to being successful at college and perhaps living in a dorm.
My son too lived in a quad meaning double occupancy 2 bedroom with a shared living room, kitchen and bathroom for the 4 boys in his suite/quad. If you feel you can be successful at college but not dorms, then you would have to choose to live at home or be able to live in an apartment independently so you would have to ensure the college you go to does not mandate all freshman live in dorms the first year.
Best of luck!