The thing they stuck up inside into and past your bladder is a shunt to keep the "line" open into your bladder so the pieces of the stone will pass. Most of your pain while pissing is from the procedure to install the shunt--- not much of a hole to install it. There is a string hanging in your bladder that they will grab and pull the shunt out in a fun little Dr. visit. Women that have given birth and also had a kidney stone say that the stone hurts worse. My sympathies.