Hi,doctor..i have not getting my periods since one and half months after intercourse..i had taken i pill 72 hours twice for it for 2 times intercourse in the gap of 4-5 days..i had checked for pregnancy for 3-4 times ,always it comes negative,in recent 2 days ago too.. doctor prescribed mi , deviry 10 mg tablet for 10 days each daily .. i had completed that course too.. now its 5th day of stopping that tablets,but since my periods are not come .. i m very tensed..plz help mi , wht i hv to do ? Is there any damages cause to my menstrual system ? When it will be regular ?