I think he might be trying to get my pregnant?

Hey guys, so I'm 20, my fiancé is 22 and we have been together for about 4 years. He's had experience sexually, for me not so much, he took my virginity and because I wasn't educated I made some dumb decisions. We had unprotected sex several times and I had to take plan b a few times within a week. He's always expressed to me how much he hates condoms and after the pull out method failed a month later, I had to take another plan b. It's really messed me up! He's told me his parents have been pushing him to have kids, and he wants them now. I really don't, I think it's a STUPID idea considering neither of us have finished college, we both live with our parents. Like honestly why?! He told me the only reason he wears condoms is because he knows I don't want kids. I don't know, I just feel really nervous about sex, I know he's a good man and everything, very loving and all, but since we are engaged is this something I need to take into account? Is it normal to feel so hesitant about sex with him?