Just need to vent on cheating boyfriend

So I will try to make this as short as possible.

My bf and I have been together for about 5 years. He’s cheated on me with at least 2 women and for both I tried to forgive and move on because I love him. 2016 I just got tried and fed up after he stayed out for 2days. Came back with this so what attitude. Just was walking ALL over me. I FINALLY broke up with him. He moved out and that was that. I started seeing someone else all along he was BEGGING for me to take him back. How sorry he was, how he didn’t realize what he had until I was gone. How he was so stupid and no other women would ever come b4 me. Sending old pics, songs, having relatives contact me the whole nine yards. So while I was dealing with someone else. I started believing what my ex what’s saying and started missing him. I ended up giving him another chance while letting him know what I expect this time. To shorten the story we found out we’re in March. B4 that I just felt somethg was off because he wasn’t showing all the things he said he would when I decided to give him another chance. The 1st couple months of the pregnancy he wasn’t showing much either but kept making me feel like I was crazy. Anyway, one day while he was in the shower I look at his phone. Somethg I don’t do. It was locked but he had it set where u could see missed calls on the home screen. There was a number with 16 missed calls. YES, 16!!! So I put the number in my phone. Downloaded an app to use a fake number and the next day acted like I was another girl trying to find out if she was involved with my bf. After that, I acted like I was giving her number to another girl that he’s dealing with too(really me). Called her she told me they had been dealing with each other for YEARS, they had sex(unprotected) a week and a half b4. That his phone was in her name, he gave her the car he was fixing and suppose to sell. Talking about moving together and having a baby. JUST ALOT!! That she asked about me because she noticed me on ig and he told her I was an ex. I LOST IT ON HIM! I’m preg with our 1st child and wanted to try and see if I could forgive if he did EVERYTHG I told him to do. Cut that fucking phone off. Get rid out the whole damn phone, unfollow and block her on social media, put a post letting everyone know his in a relationship somethg he never had on there. A few other things too. He has a work phone and I asked if she had that number. He told me no, somethg again felt off so again when he was in the shower I go look at it and see messages from her on the home screen. This time she was saying how shit just not fare and don’t even miss her or have anythg nice to say. So he’s not dealing with her but it’s the point that HE LIED AND STILL COMMUNICATING WITH HER!!!! Confronted him and supposedly she’s blocked and not communicating with her anymore. It’s like I’m trying for the sake of my family. He’s been great but I’m worried that it’s only a matter of time b4 he fucks up and this time there will be no coming back. Just venting