Hi, I m Sarai and I m 15. There have been about 3 cases in which I ve had my period for an extended time, the first was 19 days then 28+ days and then went back to normal now it has re-occurred and today is the 21st day.. Ever since my first period in December 2008, I ve never had painful menstruation , cramps , or bloating of any sort, what might this be?