Is something wrong with me??

So I've been with my fiancé since we we're 15, we're both almost 21. We started having sex and like all the time. Sneaking around and hiding while family was over, driving out into the woods and steam up the windows. We used condoms at first, until we had one break and he came in me not knowing it was broke until he pulled out. We both thought why not just keep going without a condom since the damage had already been done since I wasn't on birth control. But I never go pregnant. Well we fell in love with having sex without condoms and I never got on birth control. He would pull out at first and cum on like my face, my back or my tummy. But eventfully he just stopped pulling out and I loved how it felt when he came in me. We always have wanted babies with each other and always said said that we aren't going to prevent or try. That if it happened it happened. But now that we've been doing this for so long and so much and I'm still not getting pregnant I'm starting to worry that I can't have babies. Since we're not actually trying to get pregnant I don't want to go see a fertility doctor. I was wondering if anyone has had similar experience like this.