I have not been diagnosed with MG. I am in the process of trying to get all this sorted out. Have been dealing with it for 3 years now. My neuro tested the acetylcholine binding antibodies and they were negative. But from what I have read here, it's still not ruled out. But that's what I always wondered about the migraine thing too... How in the world could it just go on and on and on without letting up? Seems like a stretch to me.