So sorry to hear about your issues.
BCG cannot be given if there is any chance that there is even irritation in the bladder lining. You have just had several biopsies and have healing open wounds.. The BCG would be absorbed into your bloodstream and you could be one very sick guy. That is why there is such a delay between biopsies and beginning of BCG treatments. Several times while I was undergoing BCG there was irritation of the bladder FROM THE BCG and we had to wait a week or two before resuming treatment.
Sometimes, bladder cancer just keeps coming back, over and over. Yours appears to have returned at least once. IF they find more tumors at your next exam, the urologist will probably discuss the option of bladder removal vs BCG. The issue is that if the bladder lining just keeps "popping out" tumors, they could easily get out of hand pretty fast. This is a difficult decision and will take a lot of back and forth discussion with your urologist, and, preferably, a second opinion at a really good bladder cancer center.
If you read the posts under "invasive" here in the Forum, you will find that there are lots of people living very full lives without a bladder. It does take some adjustment, but they are scuba diving and driving race cars....
We will keep really good thoughts for you
Sara Anne