Hi Mandy and welcome

As one who was first hospitalized at 21 and then dx and undx a few times, I certainly feel for you. It's crazy-making!

I think the most important thing is to keep seeing the same specialist so s/he can see how the disease behaves over time. This is what helped me.

I'm sure you know that MS is a dx of exclusion and you seem to have had a really good work-up on that front.

The other thing is that if you have one auto-immune disease there is an increase possibility of having a second. So MG and MS are an unfortunate possibility.

Best to you and please hang around and let us know what is happening,
ANN