jenn-
i feel our first priority must be arranging your transportation to the hospital for this very precious cargo!
of course, there is a lot to explore about the rest of your situation, but for right now, let's try to brainstorm and see if we can come up with a safe solution.
what about calling up a taxi company and explaining your need for transport.
the other thing that comes to mind is an ambulance. you could call the hospital and explain your situation (drunk husband) and see if they'll send an ambulance out for you when you need to go.
alternatively, perhaps you could go and stay with your family? explain the situation and have someone come and collect you.
last idea is to call the police station and see if they could help.
that's all my ideas. anyone else?