Need advice please!

I'm very confused. My boyfriend already has two kids from his previous marriage and always makes remarks about not wanting any more kids when I bring up the subject. Since I've moved I have not had a chance to get to a doctor and start back up on BC and we don't use condoms. Lately, though he says he doesn't want more kids, he chooses not to pull out at all when he cums when we have sex. I haven't said anything because I'm not sure what to think and he knows I want kids. What am I supposed to think? Does he want kids or not? I mean he knows that he's taking a big risk so why is he doing it?