Hi all... I was very glad to read all the posts on this subject. I have just completed my 12th installation and I can say it's got worse and worse , with the burning sensation inside the bladder and waking up every 2 hours to pee. What I have found worrying over the course of treatment is each time the I see a different Doctor who inserts the catheter and a different nurse who then fills me up with BCG they always ask why I'm having done and do I want to leave the catheter in! The last session the nurse but the catheter bag back on and had to tell her to stop as all the BCG would go back in the bag... So she quickly removed the catheter..... It's bad enough going through the treatment but then having to question the professionals   All this makes the appointment even more frightening....