My husband does not want a baby, but I do?? What do I do?

We have a 3 year old and I want her to have siblings. I grew up with 5 brothers and sisters. My husband had one sister. I do not want a big family. I just want 2 or 3 children. I am ready to try for baby number 2, and he absolutely does not want to..he doesn't even know if he wants a 2nd child at all...this one pulls at the heart strings! Any suggestions?!