Urinary retention

Although I was never officially diagnosed, I think I very likely had this condition, associated with hypochondriasis. Only recently I discovered these are actually categorized diseases.
Initially, when I was 16 years old I just noticed I was urinating frequently. Over the following year, this evolved to urinary retention, I had troubles urinating, couldn't really do it easily. I was paranoid and thought I had bladder or prostate cancer. Did all kinds of tests, which showed nothing of course, but was still convinced. Eventually I accepted it was just my mind. Today, 4 years later I still occasionally have some issues with that, but I realize they are psychological.
This made me realize the power the brain has over physical symptoms, it is fascinating as well as extremely scary.
It is an experience I do not want to repeat.

Has anyone here experienced something similar?