I want to try for a baby now, but my husband wants to wait longer. I respect his decision, but I want to be a mother.

My husband & I have been married for a 1 1/2 years and we have a wonderful marriage and have sex very often. He's works hard everyday and is a true gentleman. He says he wants more time together for just us before kids, which I completely understand. But since the day we got married my yearning to be a mommy has grown stronger and stronger. I love children and babies and I'm constantly wondering what our future kids will be like. I know that may seem silly, but I feel being a mom is what I was meant to be. I don't know if it's because my ex boyfriend and I got pregnant awhile back and he said if I didn't abort it he'd leave me and he constantly put thoughts in my head that'd I'd be a horrible mother and I didn't have enough money to raise it and verbally abused me and etc... so I did it and have regretted it ever since. My husband knows all that and supports me but I don't know if my yearing  comes from my previous pregnancy and I feel guilty but I want a baby. How could I convince my husband to start trying???