Mothers that get jealous of their daughters

Has anyone experienced this? Am I imagining this or is it true? My mom has been bashing me about my boyfriend and I relationship. She told me not to put his last name on the birth certificate. I'm 21 and my boyfriend is 30. She put my mood down today. She told me that my boyfriend can be cheating on me while he's working cause he's a taxi driver. She told me I need to leave my boyfriend and move on with my life. I'm 28 week pregnant. My boyfriend has been emotionally and financially supportive. She has made me so stressed out. It's like every time we talk she has something negative to say about him! She said she hates him. Just cause my boyfriend was trying to protect my aunts money that my mom wanted to cash my aunts check with out her there. I agree with my boyfriend, and I talked to him about what my mom said. We been together 5 years. She told me how jealous she is of me because how successful I become.