Has anybody heard of MG just dissapearing and no medications being taken or required not even Mestinon

I thought once you had an autoimmune diseases, you have it for life, but i have heard stories of people where it goes into remission. I would imagine you would need multiple Acetylcholine Receptor (AChR) tests, to 1) be sure you really had MG in the first place and 2) to be sure it is gone.

Sure. In the early stages. I wish you well. MG is not very trustworthy.