Need encouragement please

I’m five months pregnant and having the hardest time I am going to be a single mother, but with that being said, I have an amazing support system, including my sons, dad‘s family, but without the dad. Long story short, I was lied to for over a year about his relationship status and from him telling me how he wants to be with me and he was single till then it was complicated. I fell for all of it with my delusion as any woman would when they’re in love.  The lies isn’t what bothered me. The degrading of my character towards another woman is what bothered me. He told this woman that he wasn’t sure if the baby was his that he didn’t want to be with me. He lied to my mom his mom, his sister had this lady threaten to take my life in my babies life Because he got caught I’ve been trying to get in contact with him but she made him block my number. Sidenote he’s 50 she’s 52. He’s been a serial cheater for 30 years according to her but still won’t leave him.  my feelings are just really hurt because we started this together and with one mistake someone made we don’t even speak and it’s been over a week now, but he is in contact with my mom telling her stories. It’s very confusing and heartbreaking to fall in love with someone from lies, and have it thrown back in your face, but don’t worry we’re going to his mom‘s house this week. Maybe she can knock some sense into him