My girlfriend missed one pill then took one then missed on again within 3 days at 6pm. The day she missed the pill we had sex 4 hours before she was due to take it however missed it. I know that if you miss two pills in two days your not protected but in this case, its miss one, have one and then miss one again. I just need to know if there is any chances of pregnancy. We have decided to not have sex until we are sure. Thanks for your help