Desperate for advice !!

I’m 19 years old. Me and my ex were dating for 2 years, but he cheated on me a month ago and had sex with his ex. so we broke up. and then i had sex with someone because i was upset. i ended up getting pregnant. i’m 5 weeks pregnant. me and my ex are trying to work things out but he has no idea that i’m pregnant by someone else. on top of that, my mom is trying to force me to get an abortion she told me i can’t live with her if i have my child. i’m so frustrated right now it’s ridiculous. need someone’s help and words of wisdom