Sometimes a trip or a few trips to the chiropractor or physical therapist can help. That's what's helped me in the past.
But if you're waiting to heal during treatment, here's an acupressure point which gives immediate relief from back pain. I've used it for headaches before but having done something to my back this past week, I'm using it for that kind of pain now. In fact, getting up from a chair can be difficult when you are in a lot of pain so what I do is use this acupressure point on both hands before getting up from a chair and find it to be much less painful. This point (LI 4 on the Large Intestine meridian) is an anti-inflammatory point so is good for all kinds of aches and pains.
Kenneth Tang describes it well in this YouTube video. Works really well for me! Just hold the point for about 2-3 minutes or apply pressure as Kenneth shows in the video. Both will work just fine and it will release endorphins to help manage the pain.