I need some marriage advice.

So, after my son I struggled with PPD pretty bad. I was mean. It hurt my husband. I have spent the last 9 months trying to make up for how I acted. Our relationship almost ended. We had parenting differences along with me being crazy. Anywho, I fell pregnant again. So I am probably hormonal again. Which hasn't made the last 2 months the easiest again. I'm not sleeping, our son still doesn't sleep well. Anywho, this morning my son woke up in the middle of the night. He refused to go back to bed. So I was asking my husband what he thought the reason was, teeth? Sick?? Hungry?? He is convinces it is because I took his nighttime bottle away. I explained that we can give him the bottle tonight and see if that changes anything. He said no, I insisted. If that's what it is...we can rule is out? It turned into a full blown fight of him saying he sick of me being so hostile. And I start all these fights and he is done with it. One thing lead to another and we both went to reach for our son and he ended up grabbing me by my arms and lightly turning me away. I was shocked. My husband has never ever put his hands on me. I pushed him. I was livid. I know I never should I have done that. He told me he was going to leave me and my son and go live at his work (They offer free housing) Anywho, I lost it crying. I convinced him to just go upstairs calm down and I would leave him alone to cool down. He did. We played out our morning like nothing had happened. I am so ashamed I acted this way in front of my son. At this point I wondering if it is best we part ways for the well being of both of our children. That's no way to learn how to love. I should note the night before we got into an argument because he wouldn't pick a name for our son. I was being maybe a little over bearing. I'm sure that pulled weight on today's actions. I will admit fault to being to much last night. But I feel like this morning I was pretty innocent. Idk. Idk what to do. Maybe I'm just toxic no good person who brings out the worst in people. Our house is never this hostile. This is the first time a fight has ever become even remotely this bad. We normally bicker. Idk what to think. Will things get better? Idk. How do we both move forward to create a positive loving home for our kids?