[cgarr]

If you mean pass as come out? not necessarily, The pain is when its going from the kidney to the bladder but once its going down that tube it keeps moving but still can take some time, several hours or longer, you may have what did, the stone starts down then pressure pops it back into the kidney, this could go on for a long time, you will know it when it starts because the pain will not let up, and if that happens the only thing you can do is head to the ER and get hooked up (pain meds) You might want to ask you doctor to order a scan and see what size it is that will kind of tell you how easy or how much pain you gong to be in. Mine were all 4 to 8mm and I have had many. I still have two in there now but they are only grains of sand size but they will grow!