CAN SOMEONE RELATE ??

So guys, I’ve been with my bf for almost 2 years now. For the first year, I was on the pills and for almost 1 year now, I have stopped. So for almost a year, we havent been using ANY protection. He just pulls out when I’m in this period of my cycle where i’m in high risk of getting pregnant and when i’m at low risk, he cums inside me. We have been wondering if one of us is sterile because, even though we are playing with fire, I have never gotten pregnant. We are not trying and I should probably be happy but do you guys think it is normal or should we go and have a fertility test ?