I have had pain in my lower back on the left side, radiating into my left hip, left testicle, and down my left leg to my foot. I have had for several years. Maybe twice, the pain all of a sudden stopped and switched to the right side instead of the left, but it only stayed on the right for a few minutes, then went back to the left side. It doesn't matter if I'm standing, lying down, or sitting. Twenty years ago I had trouble with my hips and the doctor said I had bone growing together in my lower back that was pinching nerves and he said would stop hurting after it grew together, but it never did. I have put up with pain for years, but I am getting tired of it.