Im a 16 year old virgin who has not had any sexual intercouse or anything else besides kissing. I started my period two years and a half ago, the day after my 14 birthday and I never get even the slightest cramps when on my period. My Last period started January 12 and ended January 17. Since then I havent gotten my period, no spotting or anything except that I get extremely painful cramps everymonth around the 13th, but that is all. What could be wrong? Help please! :(