The woman grows a freakin' human being in her belly, pushes out its grapefruit size head through something much smaller, then has to feed it with her own body. She has to get up with the thing every few hours in the middle of the night, hardly get any sleep, and then go back to work while still dealing with not enough sleep and taking care of the baby.

Once the kidney stone is out and you recover its out. You don't have to keep caring for the kidney stone.