Is it possible to pass a small kidney stone with no pain?

Question

I went to the bathroom this morning, since I’m testing of ovulation I pee in a cup lol but I noticed this little thing in the cup, could this be a kidney stone? I had no pain peeing... my lower stomach has been a little crampy but I was thinking that was ovulation.  (Pinky in the bottom picture for size reference)

Answer

No. Not a kidney stone. More likely some debris that fell from your folds of skin into the cup, or was already in the cup, than passed with your urine.

Answer

That size?  I honestly don't think so.  My last kidney stone was only 2mm and I felt that thing travel all the way down.

Is it possible to pass a small kidney stone with no pain?

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