Hi and welcome.
Sounds like you had a big surgical experience, and made it through -- no small effort I am sure.

My first real symptom was double vision. Blood tests and EMG were negative, neurologist wasn't sure what was going on. He set me up for a single fiber EMG (SFEMG) and that was when I got a difinative answer. If that is positive for MG, you probably have MG.

Others will have different timelines and events In their MG journey.

I think that by going to Johns Hopkins for evaluation you have a really good chance of getting to the bottom of things and getting started on a treatment plan.