What Causes Facial Numbness And Pain In Neck And Head?

Hi, may I answer your health queries right now ? Hello, I have had several MRI's and CT's in the past two years and it only shows some disk bulging around my c3, 4 and 5. I have noticed the last few weeks that the left side of my face get's tight or numb. I also suffer from a lot of left sided pain in my trap, neck and head. I have also seen many Neurologist's which haven't said much. Any idea what might be happening?