I am in the 'Lucky' camp as I was diagnosed relatively early. My dad and his dad both had prostate problems, so i was straight off the GP as soon as I had any change in peeing habits. I can't remember the reason for my first visit, but for the 2nd, I wasn't emptying my bladder in the morning and was going again 5 minutes later.
The PSA had risen after the 2nd visit - eventually I had robotic surgery last April.
The worst part of this is that there is no routine screening as there is no surefire symptoms, and there is a need to educate men and partners on symptoms to watch out for. Even then, no obvious symptom may be present to suggest PCa.
Apart from keeping regular flowcharts from age 40 on how often and how much is being emptied by the bladder, and looking for changes, or changes in strengths of erections, there is little you can do. Even PSA is not a definite symptom, only a sign that PCa might be present.
All very haphazard. Sorry your husband is in the club, but try not to get stressed, read as much as you can. There are long term survival prospects and a variety of treatments. Meanwhile, try and get on with your lives as normally as possible, and enjoy nurturing your children in these special years.
Paul