How much radiation dose am i risking with a bilateral hip and pelvic ct scan? should mention do not know if prob is coming from hip for sure

Considerable: That's going to be considerable rad. Exposure, and a radiologist would be able to give you an exact dose. After taking a detailed hx, one can certainly point towards a specific site and investigate that part. If multiple bones are thought to be affected, then i get a bonescan, and take it from there. Other tests are done as necessary. See your orthopod or a pain specialist.

Low risk: Risk from one ct is low. You likely receive an equivalent radiation dose from the environment in a year. If it is not certainly a bone lesion, and may be related to the cartilage, a tendon, or a muscle, MRI may provide more information than a ct. If you haven't already seen a specialist (sports med md, ortho), that may be a better option to make sure you're getting the appropriate tests.