I have had vertigo and dizziness from the very beginning. I used to lie on the sofa and face the cushions, hold on to the top of it and curl up so I could feel somewhat secure. It has been awful. I always described it as like the childhood game of spinning around and around and then trying to walk. I remember that was such a fun game. It's not fun with MS.
My doctor's gave me valium for dizziness and vertigo years ago. It slows the CSN down a bit and it does help. I have much more problems with dizziness now but still have vertigo so I just hold on for the ride.
I also have vertigo occasionally when I have migraines.
I hope you feel better and can find something to help you. I know how miserable it is.