Hmmm. Well, sitting can put a lot of pressure on your back, especially if you don’t have support for your back while you sit. You could try putting a pillow, towel or jacket in the small of your back and see if that helps.
If you are having stomach or GI issues, that can cause pain but not usually in the back. Gallbladder problems sometimes refer pain to the right upper back.
Good luck and good health!
Your holistic chiropractor (SOT(R) METHOD or AK doctor) would look at indicators and find out how the spine and organs reflexes are impacted and may also order blood work to correlate both together, at least this is how I approach this issue.
I would love to give you an easy answer, but there are many variables that need to be addressed. If it continues, I would consult a primary care or a chiropractor to do an exam, which would address the questions I asked you and help specifically diagnose the issue at hand.
Hope I helped.
Got your back!
Dr. Todd Gewant