Really. Seek out counseling or support services in your area. often, school counselors can be a good gateway to finding those.
On the other hand, I'm of the mind that sometimes, we go those places. It is okay to have times of not being that involved in your appearance, and times when really you just need to be very alone.
The "trouble with the law" bit, though, does seem to be a signal to get some intervention going.
Editor and Founder, Scarleteen
My epitaph should read: "She worked herself into this ground."
-- Kay Bailey Hutchinson