Of course, with your previous experience, you are naturally upset and afraid with this diagnosis. However, remember that your husband's cancer was apparently caught at a very early stage. At this point it is highly curable. He, and you, are very lucky.
The primary problem with this type of bladder cancer is that it comes back. Therefore, his urologist will become a very close friend, with appointments every three months for several years, to avoid having it return undetected. There will be many "ups and downs" for you to weather together. I am now four years out from my diagnosis and treatments with BCG. AND I am now on 6 month checkups rather than 3!!
BUT as the time draws close for my checkup, I get nervous also.
You and your husband can go through this together and have a long and happy life together. You will lean on each other. Just remember that he will need you to be strong so that he can feel able to share his thoughts with you, rather than hide them to protect you.
He is lucky to have you by his side.
Sara Anne