So Many Decisions And I'm So Damn Lost

My boyfriend left his phone at the bar when I was at the baby appointment because i'm 8 months pregnant. Something told me to get it and look through it. I found an older woman in his phone that was sexting my boyfriend. I called her and left my number and she called me back saying she only was sleeping eith him so he could fix her car. I felt betrayed as hell!! I am carrying a beautiful baby girl with a cheating scum bag..I just moved out and I feel so sad and hurt. Do I let this drug addicted sex fiend know his daughter? As I packed my things I found condoms bras underwears and a set of hot pink keys..I am just so overwhelmed and I was SOOOOOOO good to this man!  Why do men cheat on women who are loving understanding and kind? Is there men out there that can intimently love me and only me?? I know i can never trust him again. He thought i was a pushover. He is now blaming me for having to get his things out as well..needless to say..I'm hormonal, its summer time and I am excited to meet this baby but I'm renting a room..I am miserable as hell and i need suggestions to keep myself from going back to him! how do i not feel so down?? I am totally upset and depressed