I Have Had Pain In Both Legs For Almost A

I have had pain in both legs for almost a year now I saw my Dr. she put me on Gabipentin, the feeling is like a cold feeling, like my legs are in a freezer, I am restless to fall asleep due to being so uncomfortable its like I am restless. I have no pain in either arm. Recent MRI of spine does show bulging disk at C-6-C-7 but Drs don't think that is the issue. The coldness starts late morning in lower legs then moves up my legas as day goes on. I am really uncomfortable ...any suggestions or possible ideas?