How to deal with the pain after cervical spinal fusion?

Depends: This depends on how recent the surgery was and how bad it is and if it got better after initial surgery. If it is recent then you should have been given pain meds by your surgeon or call for extra meds. If greater than 6 months to a year then see your surgeon to be sure you have fused and make sure you haven't developed additional pathology at other levels. Some pain is not abnormal.

Take it easy: Take it easy and allow your body to heal. The post-operative medications are typically pain medications and muscle relaxants. If your pain persist, notify your surgeon. Good luck.