What a day you had and happy to hear you did not flare and grandpa is stable!
My father would get kidney stones so bad- he was only like 1 in 30 out of the whole U.S. that "mass" produced them. I watched that man endure so much pain on and off in his lifetime. I know it can be VERY painful! My oldest niece just got one about a month ago- the pain was so severe, her husband called an ambulance because they did not know what was happening! She has since passed the stone, but she said she would rather have a baby then go through that again.