It is not known since when did you start having pain. What is the duration of pain, is it persisting or intermittent etc. You should not jump to conclusions like having cancer. It will be better if you can consult your family physician for better understanding of the problem and treatment.
In the meantime you may start doing regular exercise, some deep breathing exercises, Having good nutritious diet, avoiding tension. You may take some pain killer and some
calcium and vit
B12 tab.