Everyone gets nervous before cystoscopy.
But I would not worry about it if you are 29 years old.
For anyone who is under 30 years old, the chance of being diagnosed with bladder cancer is extremely small.
I.e. the stats in the State of New York, 4 persons per 1 million get diagnosed with bladder cancer for people between the age of 25 and 29.
www.health.ny.gov/statistics/cancer/registry/table6/tb6bladdernewyork.htm