Who has gotten pregnant by pullout? 🙈

My husband and I have been using the pullout method for 5 years and my sister keeps telling me it’s just a matter of time. I know it’s possible and we’d totally welcome a new child if it happened but after 5 years and being diagnosed with PCOS, I keep telling her I don’t see it happening and that my husband always pulls out right in time 😂 like I said, I know it can happen and we’d welcome a new baby but I’m curious how often it does. 🤷‍♀️