I have recently had my third operation for bladder cancer (one a year for last three years) and the medical team are assessing if it is viable for me to have BCG.  I have no idea what to expect if this goes ahead.  I know that the doctor will discuss this with me but it is always helpful to get first hand knowledge.  Can anyone tell me what to expect, is this very invasive to your day to day life, will I be ill  (feeling sick, tired etc.) How long does the treatment last.   What questions should I ask the doctors?  I would appreciate any help and thank you very much in advance.