know what was wrong with your back. So you definitely cannot say that the a chiropractor healed you (I use cured for pathogens).
Occasionally I get horrible back pain. So bad that I cannot enter and exit my vehicle or even stand up straight. But they eventually go away after a few weeks after I adjust me sleep posture. I'm overweight so I sleep with a support under my legs which helps the back pain.
So my point is that back pain can be a tricky thing that is difficult to diagnose properly. And that you may have becoem better if you did nothing.