My moms ruining my relationship

My mom found out I had sex with my boyfriend, had a pregnancy and she’s literally verbally abusing me for the past three days She’s been calling me all kinds of names a mother should never say to her daughter and instead of being supportive of a possible pregnancy she insulted both me and my boyfriend. We’ve been dating for over 6 months and I went to her as someone I trusted to the extreme. But after this I feel like I can’t tell her anything anymore. She’s not allowing me to leave the house unless it’s for school and even then she’s not letting me take the car, she’s also not letting me go on dates with him even if I promise to not have sex again. She only wants me to focus entirely on school and have a job to help with bills which I’ve been doing even before I told her. She wants to put me on a leash at 20 years old I just turned 20 btw. I don’t have enough to move out or buy a car so I’m screwed. She’s making my life living hell and i can’t say anything to her or she’ll throw me out. Someone help me.