Hey Ben, saw your thread and am going through somewhat similar things. I've had progressive weakness throughout body, twtiching, trouble swallowing, weaker hands/jaws/face, sometimes I feel like slurring words (not sure), but I have not gotten an EMG. Let me know if any updates on your situation, as my doctor has said what I have is definitely not ALS.
I am now have really same thing after MRI contrast. I really would like to know how your symptoms is now.
My symptoms are weakness and stiff pain in the arms and tireness of leg. Twitches starts from lower leg and moves upper leg,hip and arm..now even around mouth.
I am really afaind of what happened to me for last 3 months