HI, am 20 yr old,married,my LMP was 4th jan2011, before that i got my periods on oct 25, 2010. and missed periods upto 2 months. but my results was negative, doctor suggested me Duphaston 10mg dydrogestrone tablets and got periods on 4th jan as i above mentioned. but nw i am having the same problem, why it is so? i had an abortion when i was 12 weeks pregnent, becuase the baby's growth was stopped at 9 weeks, on last yr march 23rd. what should i do?