If you're not in pain today, chances are it has moved on through, Jacked. That's what small kidney stones do. I've had three of them, all relatively small. They hurt when they're in the kidneys and ureters, and they sort of burn low down in the pelvis as they settle in the bladder. Then they move on through the urethra and out of the body and don't cause any more pain once they've passed. My docs always tell me the same thing. Drink a lot of water and keep active and moving to help them pass. Not fun.