Bea, Congratulations to your son and gf on their engagement. It will be interesting to see your xh handles this news. The visit w/his father should prove rather interesting too.
How are you coming w/your projects around your home? You aren't over doing it, are you?
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.