It does sound very much like you could have MG. But no one can really tell until you see a doctor, and be diagnosed properly.
In my opinion, you need an appt. with a Nuero and hopefully get a proper diagnoses. MG is tricky and only the proper test can tell for sure. My first Nuero tested for everything, except MG,(I don't know why) and told I was good, must be dry mouth.
I ask her later, and was not really given an answer!!!
Good luck and let us know.
FREDH