I wish I could answer your questions.

The neurologist could run some tests concerning MS -- has he done this?
If not, perhaps you could ask him to do it, and see what the results are. If it's negative, you COULD be in the very early stages -- OR you may not have it at all.
It really could be the anxiety, it's hard to say. It can manifest itself in strange ways.

I wish you the very best. Please keep us informed as to what you find out. God bless and please take care! Hugs, Lee