What you have is the classic "Ram's horn" distribution of pain with cervicogenic headache. I have DDD at all levels but really have no pain or radiculopathy except in my thoracic spine. I never felt my headaches were migraine but no one really listened. I saw a Spine and Sports Medicine specialist for something else, we started talking about my headaches, and he felt they weren't migraine either. I started doing upper back exercises, stopped sumatriptan, which made me feel awful, and it was about 6 weeks later, after 20+ years, I started feeling better.