Welcome Semendua,

What you describe sounds like classic MG to me.

Did you have the blood tests while on prednisone? I hear that they can be negative while on steroids (false negative).

Of course you can still have MG with negative blood tests as there are antibodies that haven't been identified yet. This is called Seronegative MG.

The fact that you felt much better in terms of the weakness while on the prednisone would definately point a finger towards MG as well. 60 mgs is a pretty typical dosage of steroids strong enough to keep MG at bay.

I hope that you can find a good neurologist who will diagnose you quickly as I know that the symptoms can be so disabling!

Good luck
Nicky