Suggest Remedy For Pain Radiating From The Eye To The Shoulder

I have had chronic, daily pain for 6 months that is on my left side from my eye to my jaw to my neck (front and back) to my shoulder and shoulder blade. I have recently started getting spasm like feelings on my left side and chest pain. I have had an MRI of the neck, brain and c-spine, and x-ray of my spine, an eeg, an emg, and no one can find anything. Any thoughts?