Welcome to psych central.

Your eating pattern sounds like mine. I am diagnosed with EDNOS. I am a restricting bulimic. I don't binge either but have a hard time when I think that I have eaten too much even when it is less than a "normal" meal. Purging is extremely hard on your body as I am sure you are aware of. I am sorry that you feel that therapy is not an option as many times it is helpful to stop this behavior. I hope that you are able to overcome this illness without the help of a therapist or other trained professional. It is a very difficult pattern to cease on your own and there are usually underlying issues related to the food symptoms. Good luck and again welcome.