I would recommend that you see either an Orthopaedic Spine Surgeon or a Neuro Surgeon so that they can assess you and advise from there on the treatment options.
Your symptoms sound very similar to the sort I have in my Lumbar region. I began getting back pain when I was 17 (3+ years ago) and am still trying to be seen by an Orthopaedic Surgeon or Neuro Surgeon as I have tried Physiotherapy, exercise and other conservative treatments and haven't gained any relief from any of them.
I hope I may be of some help to you.