Hi, I am 21 years old and have had the same partner for 5 years now. I have never been on the pill and we only used a condom once or twice at the beginning of our relationship. We have sex regularly with no protection or any other contraceptive and he does finish in me every time. I've pretty much convinced myself that I am infertile hence the no protection bit (I know, stupid.) could there be something wrong with me? Maybe my partner?