I broke his nose

Today my hb took me to school and then went to drink with his brother, he was supposed to pick me up so I had to take an Uber there, then I talked to his brother and he was upset because what I did.

So he jumped in the car and we started arguing, he told me that it was my fault and I said I wasn’t and I screamed No IT WAS YOUR FAULT and I screamed crazy and he started laughing so I punch his nose and he jump out the car.

I followed him and ask to come in and he wouldn’t do it, I park and talk to him, he didn’t want to talk he was bleeding a lot and didn’t want to talk to me. I feel horrible and I don’t know what to do I been crying, we had a baby and if we break up I’m going to feel bad for not letting grow up next to him

I tried talking to him he won’t he is really upset

What should I do?