Stay with him or leave him alone?

Tionya

I am currently 6 weeks and 1 days pregnant. My SO and I were ttc for 4 mos. before I conceived. We were together for almost 3 years. I found out I was pregnant 2 days after we "broke up". We had a big argument about him texting a woman who he claims is "nobody". I didnt see the messages myself, just his call record showing hours of incoming and outgoing messages and it looked really fishy coming from a man who has cheated on me just 6mos. prior. Because of this I already had trust issues with him so when I saw this I snapped. I told him we were done and he changed all of his social media account passwords of which he had given me when he cheated prior to help me have a little trust that he was no longer up to anything. Once I found out I was pregnant things were still rocky bc I was emotional and needed his support. We continued to argue mostly bc I was hormonal and needy and he was not supportive to me in that way (in my opinion). It wasnt until I trained my mind to not feel like I needed his support and stopped calling/texting him that he started to "come around". Now he wants to be back together and wants to parent together, be supprtive etc. but I alsolutely still dont trust him. Im also feeling some ways bc he changed his passwords and are refusing to give them to me again. He said it was intrusive and a headache and I felt like him cheating was intrusive and a headache and if I wld take him back i wld be miserable having to always wonder if hes up to something. He wants me to trust that he wont but that horse is dead. Trust been gone. At the same time I would like to have support (besides my mom) through this journey. Should I give it a chance for this family that he claims he wants, should I just get in it for the pregnancy and ONLY through my pregnancy or as long as I need him, or should I just let it go altogether? Pleaaasssseee advise!!!!!!