I THINK I MIGHT HAVE HAD A CYST OR SOMETHING, FOR ABOUT 1 WEEK I'VE HAD A NAGGING ACHE ON MY LEFT OVARY AND A FAINT ACHE IN MY LOWER BACK AND NOW WHEN I AM SUPPOSED TO BE OVULATING I STARTED MY PERIOD??? TWO WEEKS EARLY. ALL MY OTHER CYCLES HAVE BEEN ON THE DOT ON TIME, CAN ANYONE HELP ME. :)