question about missing a birth control and being pregnant

hi,
i normally take my birth control at 9 pm every night and then one week i was having family problems and was taking my pill at midnight, then one night i didnt even get to my pill and woke up and realized i need to take the pill so didnt get to it untill 11 am the next morning. i am on the green pills which i guess is the inactive pills and i am soo worried about being pregnant. any suggestions?? thank you