I had that happen to me; it was just awful.
I remember being spoken to and I felt I was stuffed inside a marshmallow and it took minutes for the words I heard to sink in and reach me.
Then I had to process those words and it felt near impossible.
It took even longer for me to gather a response - I just could not find the words even though in my head I had an inkling of what I wanted to say.
To an observer, I must have appeared to be a bumbling idiot. It was so upsetting for me to be inarticulate, to not be able to respond to a simple question like "What are you doing?"
I did not have the shooting nerve pain you do, but I did have trouble walking. I have Bartonella and the foot pain was terrible. When I took a step, I felt as though my foot was going to tear in half so I walked hunched over with a frankenstien shuffle.
I had nausea and vomitting too. One day I threw up for 12 hours - absolutely horrid.
I sometimes wanted to die because living was just so painful and miserable. I would wake up, open my eyes and just begin to cry because I felt so bad.
The best I can tell you is that it does get better. I slowly improved with treatment and now I can walk and talk and I can't recall the last time I vomitted. On a good day I can plant shrubs and run errands.
So hang in there, okay? It will get better. I feel for you having to go through this hon.
Peace and health to you,