A couple of weeks ago I did a series of dead lifts at 135 lbs. A couple of days later I did it again. About a week later I started feeling a pinching pain on the left side of my lower back just above my hips. It's worsened a bit, but no classic symptoms of shooting pains in the butt and down the legs. No loss of bowel/bladder function. I can move around just fine, but if I move the wrong way I get a fairly sharp pinch. My doctor doesn't believe that this is a slipped/ruptured disc, but I wanted another opinion.