I would like to expand a bit on what Anita mentioned. As you are probably aware, bladder cancer has a nasty little habit of returning sometimes. If your tumors were low grade, and did not return multiple times (and your urologist has to determine what "multiple times" might mean) it is possible to go for quite a while with careful surveillance and removal each time. When "multiple times" becomes too much, a different approach is necessary.
In your case, the initial tumor was high grade. This means that its cells are rapidly growing and have the potential to spread relatively quickly, which is why your urologist immediately recommended BCG. BCG is not usually used initially in low grade bladder cancer....only if it repeatedly returns. If HIGH GRADE bladder tumors return more than a few times and cannot be stopped with BCG, other measures are indicated. This can include, for example, BCG with interferon.
You need to sit down with your urologist and have a serious talk about possibilities and options. And, depending upon where you are being treated, should it return yet a third time you should consider getting a consultation at a center that specializes in difficult bladder cancer cases. High grade bladder cancer is nothing to fool around with.
With good care it can be handled.
Wishing you all the best
Sara Anne