Going through this pregnancy alone

I feel like a right looser, I’m so depressed. It’s either put up with shit from a man I only see 3 weeks of each month. Who lies and who won’t stop using drugs with friends when home - for the rest of my life - yes I have tried to make him see sense or get help or whatever isn’t happening hasn’t changed for 2 years now. Or be by myself 🤷🏽‍♀️ suppose the best option is be by myself - anyone else been in a toxic relationship they just couldn’t leave and kept shrugging everything off and saying it’s not that bad or it’s not that big or a deal? I just couldn’t get away untill now ...