What to do?

We have one child together. He was not planned as I was on bc. I definitely want one more and he says no way. I actually wanted 3 kids but after the first I just want 2. There's no way he will change his mind. Is this something you'd leave over? We never really talked about children before we got married (I know, not smart but figured he'd want 2 or so) please help. Children are a very important part of my life and I just feel I need one more.