Babies?

My husband has 3 kids already, and before we got married one day when he was mad he said that he didnt want any more kids. Then few weeks later he said he did. Now that were married any time i ask him if we can try for a baby he says yes, i feel like he only does it because i want kids,(i dont have kids). He never mentions anything about having babies, it never comes from him, it doesnt seem like he wants more kids. Its like hes ok if we have kids but not that he wants them. Like he wouldnt wanna try for another kid but of we had one he'd be happy with having a baby.

I feel like im pressuring him because im the one that is always telling him that i want a baby.