I am having sex, unprotected sex only once though which was last night but i know how important it is to take the pill everyday, but do i HAVE to take it at the same time everyday in order for it to work? i know it has to be 24-hrs in but does that mean i can take it later than i did yesterday? I am trying to keep it regular when i take them but I keep forgetting so i take them at a later time. WHAT DO I DO