I too suffer from lower back pain. Mine stems from my hamstrings being too tight, and pulling my body of line. Which has led to not having enough space between the vertebrae in my lower back. Certain movements trigger a sharp pain that rank a 12 on a 1-10 scale. I'm currently going to the chiropractor, and doing certain excercises to help. But I can only do so much as the sharp pain sometimes sneaks in.
No over the counter meds work. Yoga DVD's for lower back pain have helped a little. And the funny thing is, my back feels fine when I play golf. But the next morning, it's tough to put on a pair of socks....
There are many of us out here suffering. You just have to find what works for you. I wish you the best as I continue my search for a cure as well.