Man I hate to hear that Dave. Kidney stones are usually really obvious. You know when you have one. Your body is going to make damn sure you know you have one. The pain is tremendous. Hopefully it's just a UTI like you're thinking.
The older I get the more weird stuff happens. Sometimes I'll have the urge but then I'm just standing there and nothing comes out. Why are you shy all of the sudden? And then some days it seems like I have a bladder the size of a grape. Has to be emptied over and over and over. Getting old is bizarre.