I had an episode some years ago. It hurt standing, it hurt sitting, it hurt walking. It hurt so bad I couldn't sleep laying on the bed, tried a lazyboy with no better luck. Finally tried sleeping on a concrete slab floor with hydronic heat coils embedded in it. The firm support and heat let me nod off. It took two days to pass from my kidneys into the bladder. Then several months with no further pain. As I was taking care of business I felt an odd sensation and heard a slight click as a stone hit the porcelain. I retrieved it and gave it to my Urologist during my next screening and he said, "yep that's a kidney stone alright".
Regards,
GtG