2 yrs ago I had a whopping 17mm stone, a record size for that hospital. I don't think I have to mention the pain I was in for a long time...
I learned then that stones are quite common for cfers, and stones are also common after pregnancies, especially when the mom breastfeeds bc its easier to get dehydrated. They really push me to get alot of fluids now and I'm trying hard to stay on top of it.
My stone was actually too big to operate on. bc of its size, the risk of doing permanent damage to my urinary tract was too high. I had to have 6-7 lithotripsy sessions ('blasting it' with sound waves), plus a catheter for 3 months.
If stones aren't too big and in the right spot, sometimes they will take them out surgically. But the blasting is common too. Either way, its a process.
Its really important not to ignore kidney pain or blood in your urine. When I got to the ER my kidney was so swollen from the pressure of the stone it was near shutting down completely.
The other thing you can try which does help and certainly will not hurt you is drinking tons of water with lemon juice and salt in it. 8 oz of water, juice of 4-5 lemons and a bit of salt, about 6 times a day. You only do it for a day or so, but I know lots of people that have dissolved their stones that way.