Have you had an xray of neck. That cervical vertebrae pain can radiate to other areas. I suggest seeing an orthropedist to help find the root cause of this. I am sure this is very depressing and counseling might help you to enjoy life more. PT might be needed but t you need root cause first. Someone mentioned water exercise that may help once you know root cause. Some places have pain clinics to find ways of treating chronic pain. I have Neuropathy and use water therapy and medical marijuana once it became legal here. I take it by prescription pill at lowest 5 mg thc dose to take the edge off. It also helps me sleep..

I strongly recommend core strengthening exercises and stretches/ yoga. It'd been 3 years since my last fall anytime I encountered snow or ice or uneven cement during a winter jog due to doing core strengthening exercises. If I had done those first;

Sounds as though you could use strength training

So sorry there is nothing worse than constant pain .You are doing the best you can trying to solve the reason.I hope you get answers .

Lisa350 You are working your biggest muscles right know ! Your Brain ! I know I need to put my Brain on a work out schedule along with my legs ! LOL