For months now i have lower back cramps dull ache seems to radiate to my pelvis a little. i have had two trans vag us, a spinal mri, pelvic exam, been checked for uti. last year had a pap it was normal. what could this be? so worried i have cancer?

I am a bit surprised at the number and kinds of tests you have had. You need a good physical exam specially of your back and then depending on the findings maybe some physiotherapy. back pain at your age is not a sign of cancer sp. after so many neg tests In the meantime use a heating pad to your back. I am sure after finding a good MD who is not 'test' oriented you will be fine

It is not feasible to provide a meaningful opinion without taking additional history, physical examination and may be some tests. It would be prudent to see your doctor and discuss if you may be depressed. Counter-intuitive as it may seem, exercise may help. Start with low intensity exercise such as walking and gradually increase the intensity as tolerated. Drink more water. Wish you good health!