My left leg is numb from the knee down and my right leg is numb from the ankle down. My neurologist attributes all my numbness to a peripheral neuropathy. I had a Vitamin B12 deficiency which has now been corrected.
However, the damage that has been done cannot be undone. Hopefully by taking sub lingual B12 or having B12 shots will stop any further damage.

I am not trying to scare you, but, you must have your neurologist check you out. B12 deficiency is very common in MS patients.
Take care.