I have had several of them. When you get to the ER tell them what it is and then say "Morhine". And lots of it. It dispenses with the What level of pain are you in question.
I had to have one removed surgically as well. Oddly enough I know the date becuase it was the same day that Jerry Bought the Cowboys.
Anyway, make sure they test for the type of stone it is. Most often it is calcium and they will want to restrict your intake of dairy. Mine however was Caffine and let me tell yu, if they would have told me that air caused it I would have given up breathing.
Oh and another thing. I have had the stent as well. And the first experience after that comes out is like trying to pass a house in the bathroom. Grab a towel to bite down on.
"Those who would deny freedom to others deserve it not for themselves..."-Abraham Lincoln