yeah I agree, go to a rheumatologist, Also an MRI will show more detail than a CT especially with nerves and discs. Sciatica sounds like a possibility but any diagnosis would be tentative without full blood screens and a full spinal MRI. Don't rely soley on one scan especially ct
if you have had films of your entire spine and they all look clean, i would suggest going to a rheumatologist next. they can do blood work and test you for things like fibromyalgia. good luck and let us know how you make out!
elizabeth