Zoren,
I know what you're going through. I've had both. Still have my gall bladder. It flares up every now and then. You just have to watch what you eat.
The kidney stone just hurts like a mother until they remove it. If they use a scope. You'll be out in a couple of hours. The first time you pee after they do it. It will feel like gasoline coming out for about the first 60 seconds. Then you will be ok.
Get well my friend.