Hi,
I am sorry about your diagnosis but it is good that you found this site.
First of all, there are no doctors here. We just share our experience as patients about bladder cancer. You should also ask your urologist all yor questions.
Your urologist can't know what grade or stage your cancer is until after you have had a turb, a resection of the tumor, and the result from the pathologist is back. Actually, he can't be sure it even is cancer. Based on experience, he has made a good estimation of what to expect.
Bladder cancer can hurt, even it cancer cells themselves are not suppose to make pain. The pain could also be from an infection. There are a much higher risk of getting an uti if you have bladder cancer. You could have got an uti after your cystoscopy. Tell your urologist about the pain and ask if you can leave a urine sample for testing.