You've accomplished so much in a short span of time to get ready for your next adventure. I can't wait to read about it. You will figure out where you want to plant yourself when you are finished with this adventure. Take your time in making your decision.
As for the wedding, your son has thought of everything. Don't allow the anxiety to get to you...August is a ways away and things can and will change. Your h may not attend, but if he does...just be your beautiful self and socialize with everyone. Nothing says you have to spend all of your time around him. You can speak/nod your head and go off talking w/others if you wish.
Wishing you all of the best and hope that you will keep in touch. Please be careful and try to stay safe.
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.