Everyone is an individual case, but I think the abdominal pain could be your soas/illiacus muscle overworking to compensate for the back spasms. My advice - find a great physical therapist who can work through your problems...because so much is involved. Get to a physiatrist, get MRI's and find out what is happening so you can address the problems.
Yes, an MRI. You may have a disc protrusion or other pathology at L5 S1 and perhaps L5 L4. pain in the buttocks , down your leg, that wraps around is L5 S1. Many physicians blame this on the SI joints, and others believe the SI joint is not responsible for such symptoms. I don't think you can intelligently get any kind of treatment, even PT, until you know what your lower lumbar anatomy is like.
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