Welcome to our exclusive club!! Unfortunately, I know you didn't want to join.
Bladder cancer's nasty little secret is that it does tend to recur. Your bladder lining is probably unstable for some reason (smoking? chemicals? ??) and the recurring tumors are probably newly forming. At this point you and your urologist need to have a serious discussion about options.
It wouldn't be a bad idea to get a second opinion on where you might be headed from a place that has a lot of experience in treating bladder cancer, such as a university medical school urology department or a major cancer center such as MD Anderson, Memorial Sloan Kettering, Johns-Hopkins, Stanford, USC. If you tell us where you are geographically someone may have other suggestions for you. This is NOT something you want to fool around with.
Sara Anne