I need advice!

My boyfriend goes out every weekend, sometimes during the week. I’m 20 weeks pregnant and I feel so alone. I’m pissed he’d rather go out and get hammered than be with me. I’ve told him I hate him drinking and I won’t have it around my baby because I grew up seeing alcoholics in my family. Every time he’s gone out and drank he will come home and have very bad anger issues and break stuff around the house or I’ll find out he’d been texting his ex and other girl “best friends” in a flirty or inappropriate way. What do I do? Should I leave or stay? I will not have my baby around alcohol at all and I’ve told him he needs to grow up before he’s even allowed around our baby. I’m so confused please give me advice