Hello There,
I'm sorry to hear you're having this problem certainly fibromyalgia or chronic fatigue syndrome are extremely difficult to diagnose, as is M. E.
From what you've said I would have guessed that you might have been getting slightly diabetic but you look as if you had all the tests done and it doesn't look as if it's that.
Apart from the antidepressants is there any other medication that you are taking? Please e-mail me if you don't wish to show this on the board.
Best,
Alastair