Ermmmmmmmmm, I have a few questions. Are you physically well? Obviously their are pyschological issues, but are you overall well? i.e do you sleep OK, go to the loo OK?, have a fur-less tongue, acceptable skin etc?
If yes, then is there really any need to worry? yes the problems need to be addressed, but unlike anorexia and bulumia, there are no great risks in eating loads and then starving. Not ideal, but not drastic. If you think about it most mammals do the exact same thing in the wild.
However, if you are physically sufferring, then address the issue ASAP.
Further, throw away the Prozac. I have been vilified on here many times for taking a blase attitude, to depression etc but in my humble opinion there are only two things you can do. That is 1) Deal with it or 2) Don't deal with it.
The choice is yours and all medicaton will do will offset the feelings of depression NOT tackle the route cause. That, my dear, is locked away deep in your brain somewhere.