My wife has had a IUD for birth control almost all the time we have been together. I never really notice it unless we are fucking in a way that my dick is really deep inside her. Im about 6" so that doesmt happen very often. Any wives with an IUD ever fuck a guy with a bigger cock and have issues with their IUD? Can it be painful (for the wife or bull) if a bigger cock hits the IUD? Can the IUD be moved out of position needing to see the OB/Gyn? (If yes, have you told the Dr that you have a bull with a larger cock now and that is why your IUD keeps moving?) Can a bigger cock get a woman with an IUD pregnant if it moves the IUD?