yes it is very scary, but it is due to extreme anxiety and maybe some depression. I thought I was dying of MLS and my doctor ordered an EMG. Nothing was found. Remember. Twitching with an absence of weakness is probably nothing to worry about. If there is weakness involved, then you need to get it checked out.
But I think you are going to be OK. I had everything you had and then some. Eye twitch, legs, back, stomach, fingers. Sometimes my whole body would convulse. That was six years ago. I am having a slight anxiety problem at the present and some of these symptoms are back, but not as bad. But for 6 years all was well. Stress from work and a bad neck brought back my anxiety and depression.
You keep your spirits up and say a prayer or two.