Kids father

So my kids father left me when I was only a month pregnant with our 3rd child we wasn’t getting along because he was unfaithful we got into physical fights He kicked me out I was homeless I moved in with my parents he came to my parents house to try and get the kids by force that escalated he threw me down the stairs and called me names all in front of the kids I still love him he doesn’t want anything to do with me I don’t know if I want to press charges or not I don’t want my kids to be without their father specially the new born I don’t want him to go to prison please help give me.