Drinking lots of water will help. It's really hard to say when a stone will pass. Some are in a hurry and some take their own sweet time. I have taken 2 weeks to pass a stone. The pain would come and go depending on where the stone was. It's always better to pass a stone on your own, but if it's too big and gets stuck it will have to be removed. I have never had a stent and my litho was not too bad. It was like having the mild flu for about 3 days and being sore in the kidney area. Good luck to your husband. If he doesn't like the water, lemonaid or cranberry juice are good. Keep us informed.