I have posted here in the past about this very subject. Last May I had a cystoscopy after having 15 BCG instillations starting in 2020. The nurse who carried out the procedure was concerned the red patches in the bladder were CIS. So I had biopsies carried out last July. I saw the surgeon in October and he said results were negative and it was purely down the BCG immunotherapy. He did say the pain and discomfort will eventually go in time but it seems to be taking forever. I suffer on a daily basis and wonder if there are others out there with the same problems.
I would be interested on how they cope and indeed what medicines they may take to relieve the symptoms. Thankyou for listening.