Hi, I am in exactly the same situation but I have had 2 of 6 BCG treatments. I feel a little tired and have had urges to urinate which are hard to control, but in general feeling ok. Watch for urinary tract infections, I have had one that has delayed my 3rd BCG instllation but have antibiotics to get back on track. I'm sure your doctor will test for this. I don't know about re-occurence but know that BCG is the standard of treatment and is considered effective.