isle, I am really trying to be helpful here - you have to get past your anxiety!
I started twitching 20 years ago and went through anxiety then, and calmed down after seeing a neuro. Then started devloping other stange "symptoms" 6 years ago and convinced myself I had
ALS - gagging, imbalance, weakness, etc. After going to a local neuro, Emory, and Mayo I calmed down again. The anxiety made things MUCH worse. I literally convinced myself I was really weaker at that time, missed a bunch of work, etc. (I wasn't weaker). After about 3 months of that I had to get along with life.
Here I am 6 years later with progression of symptoms to some degree (won't list them all) and still no diagnosis or even a hint of anything wrong with clinical exam and EMG about 6 weeks ago.
If it will calm you down, insist on an EMG. If it won't, it is money wasted.
I've simply decided to live and see what happens as long as I can live normally and do most of things I love to do. If it is
ALS I can't do anything about it and stress only aggravates it. If it is something treatable, it will show up soon enough.
I know it can drive you crazy, but really you have to get focused on something else.