For the last few years, my menstral cycle has been normally every 25-26 days and the first day starts normally very light pink and gets heavier as the day goes on. My periods normally last approx 5-6 days.. sometimes 4-5 days. Last month my period came 2 days later than normal, and this month, it arrived 5 days later, and I am on day two and it is still very light. Is it possible that my cycle is just changing?