Should i work out while trying to recover from anorexia?

Ok, so I dont know what I'm suppose to do to recover from this and not gain to much weight. Or am I suppose to gain alot of weight? This is all really confusing to me still, I just came to terms with the fact that I have this recently. I've had this for around 9 years and I'm kinda freaked out about the damage that it might be causing. I have had so many of the symptoms for years and never linked it to anorexia I thought that I was just weird although everyone was telling me that I had it all along. I went to the my Dr, she said that I dont look that under weight. Is 105 pounds dangerously low for a woman who is 5"5, medium frame? Can I work out everyday to get toned, and keep extra weight off as long as I make sure that I eat? What are some of the signs that it has progressed to a really dangerous stage? Will my racoon, and baggy eyes, and chest fill out after I gain weight? Will I stop feeling like crap all of the time, and wil the mental side effects ever go, or is this permenant damage? Yeah, I should probably talk to another Dr about this, I'm probably going to soon but in the mean time I was wondering if anyone out there has any experience or advise on the subject. I know I sound like a drama queen but I am so releaved that there is a way out of having these symptoms. I didnt know what was wrong with me for years. And maybe some day I'll look like a full grown woman rather than a 12 year old vegitarian. Anyway, didnt mean to ramble, and I know my paragraph formation is horrible lol, I apologize. If anyone can help me out that would be awesome. Thanks