You are right to be very protective of your child. I think you should carefully read the answer from "pragmatism rules" and do what that answer tells you to do. Get a lawyer, and take a copy of that answer with you when you go to see the lawyer.
The last thing said by "pragmatism rules" is more important than you probably realize. If you KNOW the father of your child is intoxicated and driving, call the police immediately - use 911, and provide the license plate number, a description of the car, his location, and where you think he might be headed. Write down his plate number and the make and model of his car in advance so you have it ready when you call 911. When you call, don't waste time telling your whole story. Be quick with the essential details about him, his car and his location. Then let the police do what they do well.
If he gets convicted of any crime related to being intoxicated, that will make it much easier for a judge to issue the most effective orders to protect you and your child.
If you call the police once, but they don't catch him, just call the next time you know he is drunk. Don't give up - ever. And don't ever stop being wisely protective of your child. Part of the way you need to protect your baby now is to hire a competent lawyer. In my opinion, that is the first thing you should do - unless you know the father is intoxicated and driving right now. If so, call 911, then look for and hire a lawyer to start protecting you and your baby. Unless you have to testify in court that you reported your baby's father for driving intoxicated,
DO NOT EVER BRAG TO HIM THAT YOU BLEW HIM IN!!!
This guy sounds like he'd actually hurt you - maybe badly. Never anger him for the fun of it, because it's very unlikely that it will be fun for you in the end.