Did I just pass a stone?

Does this look like a kidney stone? The photo is zoomed in—this thing is tiny. I've had two kidney stones before, but both had to be removed at the hospital, so this would be my first one passed naturally. A few days ago I started feeling groin pain, and about 12 hours later it turned into sharp pain near my bladder. I woke up today, went to pee, and my bladder spasmed—then I felt this little prickly sensation. About an hour later I peed again and it burned for a second before going back to normal. I fished this out of the toilet, and it doesn't seem like it could've come from anywhere else. If it is a stone, can anyone tell what kind? I know there are different types. It feels like a big grain of salt, and it's definitely sharp.