My left palm and three fingers starting at the pinky are usually numb throughout the day.At different times the numbness spreads up my arm into my shoulder,part of my back,chest and face,the numbness is always on my left side. I have had lumber and cervical mri with no results that would cause the numbness. The mri s showed L-4 & L-5 to be herniated,also a nerve touching a bone.After walking for about 1/2 mile on the side of my left shin it hurts and I need to sit a few minutes before I can continue walking .What advice would help me alleviate this problem?