How to heal from him cheating

So January 2019 my husband and i separated but because we let friends get into our heads our daughter was born July 2019 so I moved back to the state he lived in (18 hrs from where I left to) to try to work things out it was a rocky start he seemed to have some built up anger that I left him the way I did. In January he broke down telling me he had to tell me and felt bad and I deserved to know and decide for myself how to continue. He told me two weeks after I moved back he slept with someone else and there was no emotional connection she actually is in her 40s he 20 at the time and she was looking for a hook up 🙄 I know who this woman is married to but they had separated for a short time. This was in the time things where reallyyy Rocky for us (still no excuse) and he admitted it was more then wrong. We both got checked for stis and came clean. I decided to stay we finally had our connection back we were in a good place. March this yr we bought a home then in May I found out I was pregnant even though I had been on bc. We happily took the news regardless. About a month ago it all hit me so hard my confidence dropped I kept picturing him with this woman it started making me sick. I would be fine one minute amd out of no where the thoughts hit me. I cry push him away. I love him so much he does anything and everything for me. You see his regret each time I break down. I want my family I have seen him mature greatly. I think pregnancy hormones have made me break. An advice on how to heal? I thought I had down pretty well healing from this already idk what happened. Tia