I am very sorry for your weird symptoms. You seem very upset. I am so sorry but I am afraid that no one will be willing to diagnose here. We are forum of support. You are going to need to keep at those doctors for real answers.
We can offer you support and encouragment while you work on the diagnostic process. I see that you have posted two nearly identical threads. You may want to either delete one so you get all your responses in one place or you may want to rename the subject on one.
There are some here with the diagnosis of MS and others like yourself with no answers. I am sure others will be along shortly to respond to you.
I have not experienced random shock sensations that you have described here. I have had Lehrmittes sign. That is when you bend your neck so that your chin touches your chest and you get a buzz or shock sensation. You could google that and see if it describes what you have. My Lehrmittes was during one of my MS flares. It can be a symptom of MS but it can also be caused by other spinal issues.
MS can be difficult to diagnose. There are many, many other diseases and health issues that can mimic MS. Good luck in your search for answers.
Love and prayers,