Siablue, you said in your OP that something awful had happened. If you mean it was awful that he shouted at your baby, then you’re right.
But if you mean that contacting the NSPCC and the police coming, then that wasn’t something awful. That was you taking the first enormous step towards leaving an abusive man.
I took mine about six months ago. My son’s much older than yours, but he didn’t deserve to be shouted at in a threatening way either. It was the last straw for me. A friend directed me towards my local shelter/help centre and I took a deep breath and went to talk to them.
When I was there, I was told if I didn’t do something, they would report me to social services. They also told me if I needed to leave now for our safety, that we could.
I am so glad for the tough love. I was terrified because having taken that step, there was no going back.
Now my son and I are safe, living in a lovely little flat, on our own. I have so much time with my son, and don’t have to live with the fear of knowing his dad will be coming in, worrying about what mood he’s in tonight.
Take the next step. I know it’s terrifying. But post here and people will help you. I did. It’s going to be okay.