Husband left

He couldn't handle the stress of the baby coming... Financially or the idea that his fun is over. Started drinking too much, got verbally abusive. He left because he was unhappy and it wasn't safe. Now he wants to live separately and work it out from a distance and possibly get back together. I feel like someone died. I've lost almost four pounds in a week. Go to bed crying, wake up crying. I want our marriage to work again. But I'm so hurt. I miss him, I love him, I'm so hurt. And all the joy of the pregnancy feels gone. And I am terrified that if it doesn't work and he doesn't come home that this man that walked out is going to take my infant away from me. Not all the time of course. But sharing a child with him at that point? So painful. And how do I breastfeed if he has the baby. Has anyone gone through this? I feel like I'm losing my mind, and mourning my entire life past present and future.