Hello Truman,
Thanks for the added info.
"I now have a firm mattress that is 6 months old." The big words "firm mattress".
A year and a half ago i helped my daughter move to another city. She was kind and offered her bed for me to sleep in because even at that time my back was hurting. Next morning she asked how I slept. I could not lie - I was in pain for most of the night in her FIRM bed. About the worst night's sleep I have had.
My wife had slept on an air mattress. She told me to give it a try for the next night. I did. WOW, what a difference. I slept much MUCH better and NO back pain the next morning. Since that day I have slept on an air mattress. Oh yes, it does take a few nights to get the air pressure just right.
Okay, which air mattress? Because of appropriate rules on this forum, I can answer the question by way of a PM. Let me know if you are interested. NO, I am in NO WAY associated with the company. I only want a good night's rest.
RichT