Dear D:, wiht a warm wave to Grandy~
I'm not sure if I have mentioned this before, and it might not apply, however you never know.
When my back became more than I could bear either Mrs C or I would call an ambulance.
Now in my state they come issued wiht square wheels, and concrete for the cradle to hold you, pus no lateral support so one tends to rise up and then fall back on every corner.
This exacerbates the condition and I'm in a significantly worse state than before I started. Why not use my car you ask, with Mrs C at the helm. The sad fact us that if you arrive as A&E via ambulance you get in a lot quicker, even with ambulance stacking.
It eventually dawned on everyone that whenever I arrived I was always given the same meds, and held for around 8 hours, with repeated tailing off doses as things went along. Those meds did in fact do the trick, 3 different sots of pain killer pus a muscle relaxant. Eventually a doctor in A&E said take this med pack and use it (under an other's supervision) rather than coming into A&E.
I saw my GP who said "that ought to fix it" with a grin and from then on I've used these meds at home rather than after an, ambulance ride. My son is a nurse in A&E anyway.
It has significantly improved my lot. It is quick -as they are effective -and there is no spine crunching ambulance ride.
I consider I'm privileged to be entrusted with these meds, which are on prescription and restricted, so far it has worked out and I'm pain level acceptable in 4 hours or less. It's important to be supervised so I do not get confused and get the dosage wrong or have something adverse happen.
As I see my GP and others quite often any change in my other medication or physical state has a bearing if this arrangement will continue (flippers crossed it does). This has been going for years so far.
I've no idea if this is in any way applicable to your pain, but at least it might point out there are sometimes multiple ways of getting results.
Croix
