I've been "nursing" one for a couple years. CAT scan indicated it's 9...too big to pass on its own. They can's blast it until it leaves the kidney, so I'm just waiting. Every 6 weeks or so I'll get a dull ache in my side, but the worst is the non-stop retching and vomiting. It only lasts a few hours and then I'm fine for the next 5-6 weeks. Like a ticking time bomb.