What Is The Early Periods After Going Off The Pills?

I am on the pill, and this last cycle I started it 24 hrs late. I missed a day last week, so that pill was also 24 hrs late. I have only had sex 2 times in the month and it was will protection. My period came 7 days early, and now I am starting the "official" time for my period, AKA I am off the pill for 7 days, but my period is still going. I don't know if I should be concerned. Additionally, I have been on and off some "natural" colon cleansing pills for a month, and I don't know if that has anything to do with it.