I'm your age. For me, the last of 6 weekly BCG instillations took place on Dec 31 of last year. Your last should be June 10. Technically summer begins after than and there is a chance that the mutual challenge we face might not interrupt your summer much at all. There is simply no way to know with complete certainty what the post-BCG cystoscopy (mine done Feb 14, six weeks after last BCG) will reveal. The outcome of the post-BCG cystoscopy will dictate what occurs next. The worst part, as you mentioned, is the uncertainty of it all. Mentally it was all consuming for me at first. At some point, I realized that the mental obsession had little, if any value. It just got in the way of enjoying life. Yes, some days the cancer dictates my life (BCG days, cysto days) but MOST days I'm in control physically and mentally. Cancer doesn't own me today.
One of the best things I did was create a journal, briefly noting my experiences along this path. I have poor recollection of events (from what I recall
) so keeping a log really helps. The folks on this forum have been helpful also. Chiming in with my own experience from time to time helps me too, in some odd way.
Best of luck and please keep us updated on your progress.