Rachel, It sounds to me like it is either circulatory or nerve related. I was thinking circulatory due to the discoloration. Do you have an ophthalmologist, not optometrist, you can see? Neuro-ophthalmologist would be best. They can look at the circulation in and around the eye. They can check for any nerve problems.
It doesn't sound like an MG problem. How are you otherwise? Are you weaker?
Try not to overdose on Mestinon!!! More isn't always better and some studies have shown that the neuromuscular junction can only handle so much acetylcholine at once (or higher doses of Mestinon, like 120 mg. and up). Some studies have shown 100 mg. is the limit.
I'm sorry you are having such a tough time right now. I wish you had a better health system over there. I can't stand all that you have gone through. Please go in if you can.
Annie