Welcome to HCM
We understand your concerns
I went through your problem description. You are 47 and you have lot of experience about your life and happenings around you. You must have seen people with the same symptoms. Your experience should have taught you about the symptoms you are facing.
With what you are describing, I could only conclude that you are suffering from anxiety
disorder. You are simply anxious about your health. This happens when you are more health conscious, and when you are very lazy and idle. Those who are busy in life, may not have enough time to think unnecessarily. Even people with deadly diseases, forget about them when they are in work.
Please consult a psychologist
to get expert advice. I am available online if you desire so.
Hope this clears your doubts.