Infertility

I'm a 19 yr old college student and I've always dreamed of being a mother and having kids (it's my biggest dream actually), but I think I might be infertile... Not that I've tried to get pregnant yet but I've had unprotected sex and never had a single pregnancy scare (I kno I'm crazy for wishing for a pregnancy scare but I'm very scared that I've destroyed my biggest dream from my careless actions)... Idk if I'm really asking a question but I just had to tell someone. Thank You.