My period are over due for more than 18 days.I was adviced pelvic ultrasound in which report said my ovaries appeared bulky with subcentrical follicals arranged randomly with increased stromaright ovaries measures 17.6cc and left measures 7.1.what is the problem .doc said its pcod.is it curable.she advice tab deviry 2 times a day for 5 days to resume periods .but i am much worried.plz suggest