[LuckyCharmz]

Periods can be fickle things. One month they're right on time, when another could be a few days late. When it comes to these month long BC pills, where you don't get your period for those 3 months, your body is going to have to get used to the fact that it's not receiving medication anymore. For the last 3-4 months, you've been depriving your body of a period, one of it's most natural occurrences. It's likely taking a longer period of time to get your period because of this. You may experience spotting or maybe even a period a few weeks after as well, because your body is trying to get acclimated with the fact that it's no longer receiving medication in order to prevent them.

Hope this helped!