See a physio for a thorough examination of the spine. Even if a bone is out a tiny bit, it can have a big impact, especially on the muscles and ligaments, which have to work really hard to let the spine function like that.
A physio will soon find any such problems, and may well be able to sort it out.
I have a regular 'tune-up' from a physio to loosen all my spinal joints which gradually stiffen and cause muscle pain.

I also visit my chiro every 3 months for a maintenance treatment. Both do different things.
For instance, when my SI joint locks up, as it does quite often, the physio told me that she cannot fix it. But the chiro can in a matter of minutes.
I think you had a very poor chiro. Mine is a life saver as far as I'm concerned.