Every time I do any movement I have severe to moderate pain around my right kidney on my lower back. Could this be a muscle or a kidney problem. I just had a cat scan for kidney stones 2 weeks ago and everything was perfectly normal. Could you tell me what it mite be?

Mite not be mites.

I can list about six things right now. They range from muscular to nerve or even cancer. We can't honestly say. It is impossible to diagnose over the internet, we could never get enough information and we don't have the skills regardless.

Talk to your doctor. They'll have a better idea.