Is it possible to get your tubes tied and after 5 years they come a loose on their own?

no tubes are not tied like a rope. they are tied with a suture and in the last few years, a part of the tube is actually cut. It IS possible that the surgery was not performed correctly. Thus one can get pregnant. The only way to tell is to have dye placed in the uterus then the dye ravels to the tubes. An x-ray will tell if the tubes are patent.