Boyfriend and babies

My boyfriend and I have discussed more children in the future (he has 3, I have 2 from previous marriages).Well, he's been kidding around with me lately about being pregnant (which I'm not af came) and yesterday I've been feeling stressed and down bc of Christmas and all, he asked me if I was depressed about not being pregnant (I'm not) and that he knows how to make them (jokingly). When we discussed this before he said he didn't want anymore right now, so why so much talk about it? Does he secretly want me to get pregnant. Does he really want a baby right now? I'm confused. One min he says no, the next he's the one bringing it up. Idk.