Sotto, I'm so sorry that your h was MIA and he didn't contact you over the holidays. Some of them do tend to disappear and go completely quiet. Some wait for us to touch base w/them because they do not know what to say to us. They've become strangers to us just as we have to them.
Your h may be deep into his crisis right now and all he wants to do is be w/friends or he was curled up at his place with the curtains pulled and didn't want anything to do w/the holidays. No matter the reason, I do understand how you felt.
Have fun w/your SS and I'm sure you'll be busier than a bee the rest of the week. Sounds like you are firming up some plans for NYE. Staying busy helps to keep your mind off the D.
What you are feeling is very normal and once the holidays are out of the way, you'll begin to feel a bit better. Be kind to yourself and do things that you enjoy and be w/family and friends who are happy to surround you w/love and support.
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.