First of all, keep in mind that I am unable to diagnose you because I am unable to examine you, this forum is for educational purposes.
The symptoms and story that you provide are concerning, but non-specific. Pain to the touch in the spine area is concerning for arthritis, structural lesion,
compressionCompression of the median nerve
Cpr - adult
Cpr - child (1 to 8 years old)
Cpr - infant fractureFractures across a growth plate, etc. It would be unlikely to be something very agressive (such as a tumor in the spine) since it has been going on for 10 years (bad problems generally progress much faster). You mentioned X-rays, but if you have not had an MRI of your
lumbarBack pain - low
Cerebral spinal fluid (csf) collection
Herniated lumbar disk
Herniated nucleus pulposus
Lumbar puncture (spinal tap)
Lumbar spinal surgery - series
Lumbar vertebrae
Spinal surgery - lumbar
Vertebra, lumbar (low back) spine with contrast, you need one. This will give you more information on what is going on. I would also recommend a bone scan, lumbar puncture (for inflammation and cytology) and some blood work including ANA, ESR, CRP, RF, alkaline phosphatase and a PSA (if male).
I hope this has been helpful.