Never mind...

.

Also, is there anybody here in a similar situation?

I should have posted this in weight loss...

It's going to be difficult to find someone in exactly the same situation as you with that catalogue of medical issues.... hence why no immediate reply.

I would say that you shouldn't worry too much about your body-weight. As anyone will tell you, people who are extremely muscular tend to be a lot heavier than those who aren't. 

But keep talking to the doctors because they are going to be the ones with the answer.  If you're not happy with your current doctor ask for a second opinion or push to be referred to a specialist.

I was in sort of the same situation for the last year, I lost my period for a year after losing weight to 107lb at 5f3 and being very active. The only thing that got it back was reducing my exercise by 75%, gaining to 118lbs and eating a non restricive diet, basically anything I feel like. About 3 months ago the doctor gave proestrogone pills and while I was a bit blosted while taking them it went away when I stopped taking them and I didn't gain weight from them.

If you are serious about getting your period back I would recommend you try to reduce your works for a while to see if your body can balance your energy.