That sucks man. Back problems and back pain are no bueno. I just had to sit out of training for 2 and half weeks because of a pinched nerve in my back. What sucks about back pain is that it's not only painfull but very uncomfortable.
I swear by Chiropractors... Allot of people will tell you that what they do is a scam but I have had good experiences and good results with several different Chiropractors.
Allot of back pain stems from joints locking up and fluid stagnating in those frozen joints. What a Chiropracter does is free up those joints so they can move again and get fluid moving through them as well as making sure your joints are aligned.