I bet it is all anxiety and stress.....hang in there. I know how scary it is...Please let us know how everything goes...best to you!
I had a CT scan of my brain and an MRI of my brain due to headaches and trying to find out if I had anxiety or something else. This is the first of my neck.
This does sound like a very common symptom of anxiety. I've had similar symptoms and i guess that 90%+ people who have anxiety have also had this symptom. It's probably due to the muscels tensing up.
Did you have a CAT scan? If that showed nothing, it is most likely just strain. CAT scans show 95% and MRI's show 99% (this is what I was told once in my "freaking out" period. I am sure something would have shown up by now in one of your tests...take deep breaths and tell yourself you are fine!