Ah, yes. The pain in my lower right back over the last few days that I thought were a pulled muscle may have in fact been a kidney stone. I suspect this because I can't presently urinate and I've drunk a large glass of cranberry juice and water to help flush it. I can pee in short spurts -- ha ha ow -- but I can't actually empty my bladder fully.
Home from work, painkillers, fluids. May update from ER later. Hopefully not!