Pregnant and scared

So I’m not posting for publicity I just really have no one and I feel so alone. I’ve never felt this alone in my entire life. I’m only 15 and I’m gonna give birth after I turn 16. I’m almost 15 weeks. I still live with my mom and I’m constantly stressed out. She is bipolar and yells all the time and it overwhelms me so much. Since being pregnant I lost all my friends and I feel like I have no one. I know its understandable for my mom to yell at me considering I’m only 15 and pregnant. But I wish I had some people to talk to sometimes. And my boyfriend makes me realize he’s not the right person to have a baby with. And this makes me even more overwhelmed because how am I gonna raise a baby with someone who is unstable? My boyfriend has anger issues and whenever I bring it up to him about how he can’t act that way he always disregards it and says he doesn’t care about what other people think. I just feel so miserable and disgusted with myself. I feel worthless and I don’t feel worthy to be a mom. I’ve never felt this distressed before in my life. Has anyone else ever been a teen mom and went through a similar situation? I’m just looking for some support..