Hi and welcome. i found the below about your problem. i believe you are right and the burning sensation is from your spinal stenosis. your nerves are being pinched.
There are many indications of a burning sensation felt all over the body ranging from a psychological reaction to a neurovascular dysfunction.
Whatever the cause, the root of such burning sensation involves nerve damage.
The body’s nerves are responsible for the transmission of signals from the brain to different parts of the body.
These signals help muscles to work and move and it also helps to perceive sensations.
When these nerves are damaged, the signals are not properly transmitted to the different parts of the body causing numbness, paresthesias, tingling sensations, pins and needles sensation, and even burning sensation.
Hi Baby, So what happened to you in 2006 to bring this on, can you think of anything that could have made this happen, something must have brought this on, its a puzzle.