I've been on tri-cyclen low for three months, this will be my fourth. I'm my fifth day into the month that I was supposed to start a new pack but couldn't get them until now so I haven't taken any, do I just start them now from when it says Sunday (even though it is thursday) or do I just wait until Sunday, which is in 3 days? Or do I have to take a couple, or what do I do?