Yes, they more than likely do confirm MG. I'm glad you know what is going on but I'm sure you are still overwhelmed.
You need to see a neuro anyway. They always like to do the EMG's.

It's their "gold standard."
If you don't have a pulmonologist, I hope you get one of those as well. They are an integral part of your "team" when you have MG.
If you have any more questions, please ask them. There's a wealth of information here. Living with MG is hard but you can do it! You probably have to adjust a few things like not overdoing it but it is doable.
I don't know what else to say other than get yourself a VERY GOOD neuro! Take care.
Annie