Pregnant and don’t wanna tell the dad. What should I do?

This has happened at the worst time possible. I already have a baby who’s under a year old, the dad and I had been together about 6-7 years but he treated me horribly, was mentally emotionally and verbally abusive, he had good days and could be amazing when he wanted to be but he’s a pro narcissist. He did do everything for me but at the cost of my mental health. I FINALLY decided to leave him for good about a month ago and have not spoken a word to him or seen him. I’ve “left” him so many times before but this was really gonna be the last time like I want to be gone from his life for good. I live alone with our baby and have been making my own money I’ve not needed anything from him and I’ve been so proud of myself. Well last night I realized I’ve not had my period in a long time and my stomach sank so I decided to take a test and it immediately came up dark positive. The baby is 1000% his but I don’t even wanna tell him about it because he’ll just use it as an excuse to have access to me and honestly I just don’t even want to contact him at all even over something like this. We do already have a baby but he hasn’t asked to see her or nothing since I left him. I already know what he’ll say he’ll just say the baby isn’t his or some bs. Is it messed up to just move on and not even tell him about this baby or ? I feel like it eventually will have to come out one way or another but I just don’t want him to ruin this pregnancy for me like he did the last one and idk if he even deserves to know. What should I do?