I have almost the same problem as you. I was diagnosed with cervical stenosis several years ago. PT cleared it up about 6 years ago. I occasionally get what is called a cervogenic headache on the left side of my head. I did get an injection on the left side of my neck about a year ago. The injection wasn''t as painful as I thought it would be. I still get the headache but only occasionally. It did help for awhile.