Hello!
You might want to check out the Featherweights section, Chicks in Control, and Dieting with Obstacles.
But, I do want to point out my concern first that the mention of having once been anorexic sends up huge flags on a dieting site like 3FC.
No one here supports or promotes that. The site isn't just about losing weight, it's about being healthy overall.
That being said, from your post you're under a doctor's care, so I hope all that works out.