How can I make my mom more interested in my life?

My mom is a very selfish person. Instead of having conversations about me, my husband, my siblings, etc… all she wants to talk about are the other women in town she competes with. They are all in this big race to see who can be the skinniest, best, hair, best clothes, best car, etc… It’s ridiculous.

Also, she has never been a real “mom”. I could never go to her for advice, tell her anything, or tell her my problems. She would always make fun of me or my situation and then tell all my relatives. She even used to make fun of me when I was going through puberty. Really make fun of me, like a classmate or bully.

Part of me thinks it’s because she really has no education, no knowledge of the world, or any sort of culture. She balks at these things and has to be forced or bribed into doing things like going to plays or shows. She’s just involved in her tiny little world where everything she does is great, and everything others do is horrible.

The thing I’m most worried about is becoming pregnant and having to tell her. My husband and I have been trying for 6 months, and she has repeatedly told me that a child isn’t right for me, and that a baby would be too stressful for me. None of these things are true. She even interrupts and tells relatives (when they ask about my husband and I having kids) that “a baby is the last thing she needs”– before I can even answer.

I’ve tried to ignore her talk like this, and the obsession with the other women in town, but she is incessant. I feel like she is just trying to make her self feel better, but she has nothing to have low self esteem about. I’m just really concerned that she isn’t going to be supportive or like it if and when I get pregnant. I want her to be interested in me, but I don’t know if she’s capable. Advice would be appreciated.