I was never sure if my daughter wanted children or not, nor did I want to push the subject. I was late to motherhood myself, and it wasn't something I had always felt was essential (very happy though when it happened). But nearly 6 years after diagnosis I have two grandsons! Worrying won't help your health. Worrying about something that may never happen uses up energy better spent on other things. I am sure you want your son and his wife to have children when they are ready. There are many things in life we can't plan - none of us planned bc! Enjoy your children. You live on in them however long your life may be. And their appreciation of your care and love will pass on to grandchildren. Who
may well be around to delight and exhaust you! Take care.