To Tracey: You ARE GOOD! I wasn't finished.

Hi Tracey,
You are so good. I wasn't finished pooing by a long shot. My last three runs to the bathroom have produced several hard balls of what I first thought was just poop, but when looking closer, they may be stones. Let me describe. All are perfectly round or slightly oval. About the size of small marbles. Shaded yellow on one half and tan on the other. Lots of grit. I didn't count because I wasn't even sure they were stones. I was looking for green, but these were pale yellow/tan. What do you think?
Thanks,
Birdie Tweet