What should I do if I feel suicidal

I'm pregnant and depressed. My boyfriend says I'm selfish and the only person that can make me feel happy is myself. He keeps saying "put your big girl shoes on" and calling me childish and saying that I need to "grow up". I don't know what to do anymore I don't want to live anymore and he makes me feel worse about myself. I also have a history of self harm and I've been having strong urges. I'm scared that I will hurt myself and my baby. Please help