MrsBro13, I know every single one of those physical symptoms intimately. The spasms, the shakiness, the restless jumpiness, the lump in my throat. I know it's anxiety causing these things as I've had multiple pdocs tell me those are incredibly common complaints from anxiety sufferers and yet, even with that knowledge, I stress and worry over what could be physically wrong with me. Cancer is my big fear and the ***** about cancer is that it's impossible for me to prove that I don't have it. Fear, desperation, despair, it all hits me in a hot wave of panic and I'm certain I'm going to die.
But here's the kicker, this has gone on a long time and I'm still not dead.

It is, in all probability, just anxiety. Unfortunately knowing that is just not enough some days.
I hope you feel better.
Cyran0