Due tomorrow! Slightly annoyed

So my OH has decided to have a tantrum because I had a little joke about him being at work on my daughter due date tomorrow on the phone to my friends. And now he's using I don't want to be at the birth as a way to hurt me. I am a bit upset but I can't help feeling excited because tomorrow is my due date and I'm all ready for her. Is my OH nervous or scared or just being plain horrible?