I think my boyfriend is trying to trap me

So I'm 18 and my boyfriend is 20 we've been together for 3 years and I'm on birth control but because I'm on the mini pill it's less effective. We've talked about kids and we agreed that we will use condoms but a couple months ago we stopped using them because we both really didn't like them but I have noticed that he "accidentally" cums inside of me and asks me weeks later if im pregnant also just this morning he sent me pics of him holding a baby super happy. should I be worried?