How Can Chronic Backache Be Treated?

For the last two years I have experienced chronic pain. Over the last several months the pain has become much worse and has changed my quality of life. I was married last September and with the marriage my daughters and I became part of a blended family; the blended family has created immense stress and anxiety in my life which I thought may be an underlying cause. I am experiencing, daily (some days more debilitating than others), the following symptoms: pain in and around my rib cage (area is sensitive to the touch and is constant), chronic back pain (primarily lower back, but also includes upper), muscle weakness (in both arms and legs), and extreme fatigue. I am prone to kidney infections and am uncertain if the symptoms are related to my kidneys. My last visit to my doctor showed that my rheumatoid factor was slightly elevated, but a visit to a rheumatologist determined that it was not rheumatoid arthritis. At this point I am unsure who to see- though I have scheduled an appointment with a urologist- and am desperate for both relief and a diagnosis.