Just want to throw out there that his being drunk is not a why. After my fist DDay, WH had an EA, he told me it only happened because he was working I overseas and he was lonely and missed me and the kids. Here I am and my most recent DDay was 6 months ago with another EA.
Clearly it wasn't just because he missed us. And chances are there more to your WSO's why as well.
Good luck and please take care of yourself and your baby.