While you're getting tested for all sorts of things, PLEASE have your doctor do a Celiac Disease screening. Many people with MG benefit from a gluten-free diet (the "cure" for Celiac Disease), and about 1-in-133 people will test positive for it, even though 97% of them don't have "typical" symptoms.

The pain is a curious symptom, though - most people with MG don't experience pain as part of the disease (although some do).

The eyelid drooping can be indicative of other things as well - please be sure that your doctor runs ALL of the tests for MG, which will include some which can catch those other conditions. Many people with MG test "negative" for the disease, but still have it - in those cases, it is more of a process of elimination to get to the diagnosis.

In any event, we are all here to help you get through this!