Hey ladies my SO and I are having a little problem with calculating if the plan b will still work if we had sex on Friday 08/05/16 and I take the pill Sunday 08/07/16. Is that too late to take it? I'm really Stressing out I don't know if I'm doing the math right. Let's say it happened at 4 yesterday(Friday). So 4 yesterday(Friday)to 4 today(Saturday)that's 24 hours. Then 4 today(Saturday)till 4 tomorrow(Sunday) that's 42 hours. Isn't it? Someone please shed some light on this. I'm starting college in a couple weeks this is not the time to get pregnant.