Welcome Pinkynose.

My symptoms also started after a period of extreme stress. I have many of the same sensory symptoms, including the twitching and cramping as well as the "shaky muscles" while working out. EMG came our normal for me though - so no significant motor neuropathy.

Keep working with your doctors to try and find a cause. At the same time, work on some of the recommendations you can find throughout this forum. (Stress reduction, dietary improvements, exercise to the extent possible, and various supplements.)

Best of luck with your condition. keep us informed about how things are going for you. Unfortunately, this is a hard thing to "cure", but there are a lot of things that can help to make it manageable.