if you read my story Bulimia in explicit detail, i think its at the bottom of this page or the next one, that might be of some help for you.
i haven't made myself sick for weeks honestly something just clicked and i was ready to 'stop'!
i know how desperate you feel i can still remember being at work and think of when and where i would make myself sick and would use all sorts of things to make myself heave.
at the end of the day it is a behaviour which is learned thus meaning it can be unlearned. just keep your pecker up and stay positive .