Good news indeed.
On 11/15/18 I had 2 low grade papillary urothelial carcinomas (negative for lamina propria and muscularis propria invasion) removed. Surgery included an instillation of MMC. For a few days post op, urinating was excruciatingly painful. Fortunately the pain slowly subsided and by Christmas things ... err ... flowed well.
On 3/4/19 I had my first post-TURB cystoscopy. Normal except for a small patch that appeared inflamed. My urologist said it could be irritation from the mitomycin instillation or could be the precursor for a new tumor(s). He suggested we wait, give the bladder some more time to heal and revisit in 3 months. Judging by the way I felt after the TURBt, I believe the MMC wreaked havoc on my bladder lining so I'm hopeful that the reddened area is indeed from the chemo.
Please check back in after your next scope. Best to you until then.