A heating pad will do you a world of good. I did some interesting things to my back trying to move a voting machine. The heating pad made me human again. Aspirin is good stuff. When I was working Christmas gift wrap I used to take an 8 hour aspirin before I started my shift. By the time it kicked in, I needed it.

DO see a doctor. Manipulating a cracked vertebrae will make a bad situation worse.   I reccomend a massage therapist. I have some back trouble, thanks, in part, to my sister's idea of fun when we were kids. Massage helps a lot.