From one who’s had ‘em, the bad news is some are too large to pass, and the longer you wait, the greater the risk of kidney damage...Some are just too large to make it thru the urethra...
Best advice is seek a urologist...I had a 17mm stone, and due to position was not a candidate for lithotripsy...Stone needed to be broken up with a laser and the debris vacuumed out...All done thru a transurethral catheter under general anesthesia...
Good news is it’s painless and recovery is “right now”...Pain relief is “Ahhh”!
indeed