I am in the same situation. I have some bladder polyps and am waiting on the procedure to have them removed. If I am active I notice much more blood and blood clots in my urine. I don’t have a diagnosis yet till after they are removed and tested but have been told they are most likely cancerous.
I am recently diagnosed with bladder cancer and am awaiting a biopsy to confirm. In the meantine, is seems that any exartion aggravates the symptoms. I washed 20 outside windows one day and played tennis for 10 minutes the next. Both days, my symptoms were much worse. It seems I have to rest to limit symptom flare ups. I find nothing on this by googling.