Sounds like you have an instability in your back. A chrio will only provide temp relief. All they do is move the vertebrae which will just slip out of place again in the future. In fact, if they manipulate it enough, they actually increase the incidence rate of the injury occuring again.
You best bet is to see a physical therapist. They not only can pop it in place but they can address the true problem and give you exercises to stabilize the area so future problems will not occur.