Oh definitely continue taking the pill UNLESS you're thinking of permanently going off of it. Thing is that once you go off the pill, your body will probably take several months to regulate itself. Going off the pill for just a short while and then going back on won't do you any favors.
Have you taken any pills late this month? Or have there been any other changes, like stress or diet? You're most likely not pregnant, there are just so many factors that can contribute to a sudden menstrual irregularity.
Your period will probably show up during some "active" pills in your next pack.