numbness – long car rides make MS symptoms worse?

I am in the process trying to figure out what is wrong with me, could be multiple sclerosis, but we’re not sure yet. I recently took a long car ride (7 hrs) and both feet were completely numb and low function in my hands. I also felt incredibly weak after leaving the car. Would vibrations make "MS" symptoms worse? I’ve heard of fatigue, heat and stress but not vibration? Any thoughts?
I have no circulatory issues. it does not only happen to my feet and legs but arms and feet as well. mainly on the right side. Been to neurologist, have abnormalities in brain – but cannot distinguish the etiology, next doing an MRI of spine. just so you know…

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