Hi Eileen,
I often have a very sore back but I attribute it to the way I try to get around and my posture.
I have allodynic pain across my back but have alwayd been treated by my physiotherapist for my deep back pain.
If you could possibly tolerate hydrotherapy then it is THE BEST

for my pain. Takes a lot to get into the pool but once in there it is a miracle.
As everyone has said it is always good to see your doctor to eliminate the possibilty of something else going on.
Good luck
Tayla