If you don't feel up to going tomorrow night, then don't. However, if you want to go, then go. Your h needs to learn to coordinate time w/you earlier rather than at the last minute. His mother could watch your son until you are ready to come home/pick him up.
Tomorrow may give you the answer you are searching for because you may be coming down w/something and then you'll most likely stay at home w/your son.
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.
