"The prep" is a bit unpleasant for a couple of hours, but no big deal. The actual procedure is done under propofol. Consider that part the best nap you will ever get.
You will either get a clean bill of health, or the doctors will find something that is easily treated right then and there. The stigma (especially of men) about this procedure will lead to countless numbers of them to die from something that doesn't have to be.
Get the procedure when your doctor says. Just do it. Please.