Your PSA does not have to be above 4.0 for cancer. If it doubles in 1 year, even under 4.0 can indicate a problem. While the digital exam doesn't always find a mass, the labs don't always indicate cancer. That is why you do both.
The likelihood that you have prostate cancer at 40 is slim, even if there is a family history. My first exam as a student, I felt a module and his PSA was normal (Less than 4.0). He had cancer. Again, that is a rare incident, but it does happen.
In 10 years, you can revive the thread and let us know how you did. Lol
