Pregnant and haven't told ex

I'm 31 weeks pregnant and I haven't told my ex boyfriend yet. Him and I broke up in February after being together for over a year. He was emotionally abusive to me and made me feel like shit 24/7. I have borderline personality disorder and he would target my symptoms and insecurities. He's an alcoholic who lives at home with his parents. He has no job and no plans to do anything with his life. Ever since I cut him out of my life I've been happy and successful. I moved away with my best friend to start my new life. I got accepted to college and I'm starting in September. I'm lucky my school is willing to accommodate me to help me be successful. I have so many supports in my life and I feel great. I don't want to get involved with that asshole ever again. Am I wrong to not let him know?