I Am Beginning A Six Week Program Of BCG Due

I am beginning a six week program of BCG due to bladder cancer and I was checking on what to expect for side effects.
On Sept 8, 2015 I lost a kidney to cancer and have had reoccurring tumors I my bladder. I have had several cystosopy to remove the cancer growth however they reoccur within less then 3 months. I am hopeful that the BCG treatment will take care of this issue.