I really sympathize with you....the uncertainty and waiting can be more difficult than getting the diagnosis! And remember that it is possible that this isn't cancer. You really won't know until the pathology report comes in after the TURB.
You will find many recommendations from "Dr Internet" on diets and vitamins and supplements that will not only cure cancer but will even grow hair
Beware of these. A healthy diet and life style are always a good idea but no one has any rational information on anything else. And, as Alan mentioned, any tumors have been growing for quite a while.
Other than smoking or exposure to a few chemicals no real cause of bladder cancer is known.
IF you do have bladder cancer it is very possible that it has been found early. Depending on the exact pathological diagnosis there are some very effective treatments available and after this "bump in the road" your life can continue normally.
Keep us informed as to how this goes.
Sara Anne