went to the ER twice. I believe the ureter is about 3-4 mm and my wife had a 6.6 mm and then said...OK go home and pass it after drugging her up enough to kill a small elephant. Two days later we're back in there doing the same thing, and finally a few days later surgery to blast the sucker. Sorry man. Although I hear chugging Coke and eating asparagus is supposed to be some way to speed up the passing. Good luck.