Gumpster - without knowing what the problem is, I would recommend that you try a couple of gentle yoga stretches. The Cat and The Downward-Facing Dog. I find them helpful when I get back twinges.
www.yogasite.com/postures.html
Sorry, I don't know how to do the clever link thingy.
And, like Wallplanner says, see someone about it to nip any problem in the bud.