Don t freak out until you ve taken that pregnancy test. It may still be negative. As far as him possibly thinking you did this on purpose, all you can do is tell him the truth. Why don t you tell him your fears about being pregnant? Then suggest to him that if it does turn out you re not pregnant, you should start doubling up on the protection (using your IUD and a condom - if he starts dating, you ll need that extra protection too). That way, you can look like you ve been trying to keep on top of everything and prevent pregnancy. Since you have to get an IUD at the doctor, you could ask the doctor for a slip to prove you went and got it, if he doesn t believe you. If you wait until you re in your second trimester, covering up your pregnancy all the while, he will suspect you of lying about how you got pregnant, too. As far as him suggesting abortion, he can say that he d like you to do that, but him suggesting it does NOT mean you have to do it. If you don t want an abortion, then stand your ground on that issue. You don t have to hide a pregnancy, in order to avoid abortion. It sounds like you re just trying to avoid the argument, but it s better to argue and be honest about it.. Then he shouldn t have a reason to question your honesty about your use of birth control when you got pregnant..