Husband has a baby with ex-girlfriend of six years and doesn't want to have a baby with me yet.

My husband has a daughter with his ex-girlfriend of six years. I love my stepdaughter so much, and she loves me. She's absolutely awesome. However, I've ALWAYS wanted to have a baby, someone to take care of and love unconditionally. Many people my age drink and party, and that's never been me. Or my husband. We both love kids. I feel like my calling is to be a mother. He has always wanted multiple children, and still does. But he makes me feel like he doesn't want to have a child with me or like he won't love our baby as much as his daughter with his ex. We were talking about how cute his daughter is and how we can't wait to see what our baby will look like, and he said, "I don't think any baby could be as cute as (His daughter). She's so perfect." He is scared that I'll keep our baby away if something goes wrong with us, like his ex did. She kept their daughter away out of jealousy until they went to court. It killed him. He knows how bad I want a baby. And to make things worse, he always calls his ex, "Mom," even on text messages. I confronted him about it because, honestly, it's a slap in the face to me, and he said, "when you become a mom, I'll call you mom." I said, "but you won't make me one." Every single time I try to talk about having a baby, he literally ignores me. Then he's telling his ex she's the best mom in the world. He tells me I'll be the best mom, because his daughter loves me, and every other kid I've ever been around. I love kids. I don't know what to do. Please offer me some advice. It really hurts my feelings when he calls his ex "mom." I told him I didn't want him to so he stopped, but she still calls him "dad," and he started calling her, "mom," again. It's so frustrating. I'm on birth control right now and I'm not going to stop taking it without telling him and us deciding together. Also, he admitted to me that he and his ex were TTC when they got pregnant. She was 20, he was 21, they both lived with their parents, neither had jobs or went to college, and were completely unprepared. Now, he and I are both older and more mature, we're married, we have our own house, he's been at his over a year. We're prepared. We have money saved up. Yet he doesn't want to TTC with me.