You need to see a spine surgeon for proper diagnosis. You make no mention of having an MRI done or anyone giving you a diagnosis.
You've been going about the problem you are having the wrong way and in the wrong direction.
The first thing you need to do is get a proper diagnosis with a spine surgeon. Either an orthopedic surgeon who specializes only in spines or a neurosurgeon that specializes only in spines.
You will no doubt need MRI of the spine done and possibly other tests.
None of those that you have seen are able to properly diagnose you and you have not gotten proper treatment because you have no diagnosis.
A CT is not enough to diagnose your problem, you need and MRI.
"CT shows mild stenosis and budging disc but apparently not enough to be a problem"
That's an absurd statement. Just because it doesn't fit the classic picture of what might be causing your pain, any good spinal surgeon will use the tools of an MRI and CT scan as only pieces of your problem. He/she will then take your symptoms and try to match them to your MRI and or CT or both.
Mild stenosis and bulging disc can cause far more pain in some people than in others. To say that because it is mild, it can't cause your pain is an insult to the patient, IMHO.
Go see a spine specialist and get a proper diagnosis and the a course of treatment. What you have been doing is an obvious waste of time as it has not helped you and you continue to suffer in pain.
Fran