I am so sorry that the therapy is not giving you positive returns. I think that I may have suggested this once before, but it may be time for you to either admit yourself or getting a referral from your medical doctor to enter an in patient hospital program for eating disorders. Yes, the process does take time but it seems to me that you need some intensive high level intervention that is usually only available through an in patient program. I do not know where you live but I did a quick search of the web and came up with a possible resource at http://www.allianceforeatingdisorders.com/Treatment-Centers
and you may want to connect with the National Eating Disorders Association at http://www.nationaleatingdisorders.org/
and they have a help line at M-F 9:00-5:00 EST. Please call us at 800-931-2237. I am not a professional and I have absolutely no connection with either of these two sites but it may be worth trying to find an appropriate program. I know that this may seem like an odd suggestion, but I do sense your desperation . . . have you considered contacting Dr. Phil? The only reason why I say this is (and it is an exchange) guests who have such strong and compelling issues such as yours are often offered free in patient treatment. Your specific condition, although unique to you, is actually quite widespread in one form or another especially, it seems, among young people.
I am so sorry that I cannot give you more concrete solutions . . . please keep in touch even if it is just to tell us how terrible you feel . . . even though we do not "know" you, we do know you and we really are concerned for you . . .take care, KC