This sounds so much like me too! I have had MS ruled out and yes they also talked about MG for the muscle weakness. So eventually I got the Lupus with an extra still being tested for polyMyotosis or de....... Something along with the possible of Scleraderma. MG has been mostly ruled out due to my EEG and the way my muscle deteration started out. I find each flare up my muscles are getting weaker and weaker. One thing I have been told is not to have the EMG test done when my flare up is over and to wait till the next one and to get the CRP etc blood tests done before the EMG test as the test effects the blood results. Hope this helps
Desley