The stent was the most uncomfortable part (TMI, but the whole time, it felt like a tampon that got a little out of place). I have hard stones. The one on the right side (about 7 years ago) caused an infection, and I went to the hospital nearly septic -- never had pain from the stone itself. I had 4 lithotripsies to make it go away. For that one, I had to collect the pieces and bring them back to my urologist so they could figure out its makeup. I was then put on a low oxalate diet. Over the years, I've given up black tea and a lot of leafy greens, but that's really all I've been following.
I've had a stone on my left side we'd been watching for a few years, and we just tried the lithotripsy again - it only broke it in half. We're just going to wait another year before getting another xray and trying again. It's not causing any pain, and I don't have an infection, so we'll see.
The procedure is easy -- they knock you out -- you might be a little sore the next day.
Best wishes!