How Can Constant Backache Be Treated?

My lower cervical spine/upper thoracic is very sore and I thought there might be something wrong with the C6-7 fusion I had. Xray says fusion okay but there is arthritis and spurs. The pain is a burning type pain like touching an inflamed pimple. My left shoulder also has pain at the superior and posterior insertion sites at the head of the humerus. . I am wondering if the two sites are related and may be something with muscle or tendons. This pain has been present for about a year but getting worse and is nearly constant in my back. going to the gym and using weights hasn t made it better or worse.