Sounds, in many ways, an awful lot like me. late, late night, after teh wife was asleep, when the REAL drinking would start. Towards the end, there was a lot of bottle-hiding going on for me too.
I'm on 10 days. It gets better after the first couple. GET HELP. Go to meetings, get a therapist, and SEE YOUR DR. Believe me. The more/bigger your support group, including your wife, the better.