Its impossible to know what our body is "thinking", or we could do things differently.
I'm certain that stress brought my MS symptoms to the point where they could not be ignored. I had lost 40 lbs. the previous year by adopting healthy habits, and I was doing alright until experiencing several weeks of stress. Ugh.
Sorry for your MG. Thanks for posting about it -- I hadn't really known much about it until reading your post and then looking it up on the internet. Weird disease!