Hi Tabby,
I was diagnosed 21 month ago with superficial, low grade bladder cancer and I have had similar experience as you. There seems to be a widespread belief among urologists that non-invasive bladder cancer does not give any symptoms except blood in the urine. I say bullshit to that! I did have severe symptoms, pain, urgency, and a general feeling of inflammation before my first TURB. The symptoms were gone after the TURB but came back after 6 weeks, and so did the cancer, twice.
I did call my clinic before my first TURB to get something for the pain. I just got paracetamol, which did not help at all.
Superficial, Low-grade bladder cancer often recurs, but the good thing is that it very rarely became invasive or spreads to other parts of the body.
I am not a doctor, but IF the cancer has recurrence at your check up in October, I think you should discuss about additional treatment (BCG) after TURB with your doctor.