You are not alone in your confusion and fear. The following links to some articles might be of help to you.
However, please bear in mind that these articles are not written by a doctor and I don't think they have been validated by the medical community. Still, many people recovering from EDs seem to follow the guidelines highlighted on this woman's website. Take what you read with a pinch of salt, or discuss it with you therapist and/or doctor.
Your Eatopia - Blog - Extreme Hunger: Profoundly Disturbing
Your Eatopia - Blog - Time and Scope: Recovery Is Tough
Your Eatopia - Blog - Bingeing is Not Bingeing (this one is pretty controversial)