Others are doing a good job talking about your husband's alcoholism. I want to talk about the baby, because, frankly, that is where your priority needs to lie right now. You have seven months to get this straightened out so it is a very tall order and you need to make choices asap.
Whereas before you became a mother (and yes, you are a mother already!) you had time to futz around, now you don't anymore. How is your husband going to be a partner in taking care of a baby if he is drinking to excess daily? Are you going to trust that he's not going to drop the baby on its head, forget that its in the bath? Do you really want to have to oversee not one, but two individuals all the time? Will he be solely responsible for the baby while you're working? Others mentioned driving - hard to avoid. What if there is a DUI, or a bad accident? Will you be still be dealing with all this BS while you're trying to deal with being a new mother and the needs of an infant, as well? That will last about a week until you're done with it. It's probably hard to imagine right now how hard raising a child is even with a perfect partner. Having one who is child-like or dysfunctional is not something you are going to want to live with, take our word for it.
He needs to get his act together NOW, and you need to make it happen or think about getting resettled elsewhere by the time the baby comes. Your resources are Al Anon, re-visiting your primary care physician with your husband and telling the truth about what is going on, marriage counseling with or without him, and even your child's future pediatrician. Bottom line is that his drinking needs to stop completely, as he is alcoholic and continuing to drink isn't an option, as he can't control it. Again, your most important priority is bringing your child into a good life, not one where its dad has a severe drinking problem, which would be very unfair to your child. Please think of the implications of that (which may also influence your child's future drinking, among many other things like basic safety). I feel for you, I really do. It sounds like you are just figuring out the severity of this problem, and you now have the added stress of becoming a new mother on top of it. You may not be able to deal with both things, especially in such a short amount of time, so you have to prioritize. Again, your baby is your first priority, as it is completely dependent on you; your husband has choices. I really hope for your family's sake he makes the right one. But you have to take the bull by the horns here and make your own choices.
https://community.whattoexpect.com/forums/march-2016-babies/topic/alcoholic-husband-212.html
That said, please re-read your post. There is simply nothing healthy about your marriage right now and you are contributing to the dysfunction. You’ve mentioned the two of you are young - young people often need mentoring and support to become whole and healthy functional adults.
