Muscle spasm is not typically a burning pain.
In fact, it is characteristic of a pinched nerve, radiculopathy.
We can not say, without examining you, that this is not a disc problem.
And examination is a must.
This has gone on long enough without exam.
I would have it examined now.
As always, you can find me in request in medical to save time, have a correct and safe answer by a double board certified US doctor, etc.
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