Suggest Treatment To Get Normal Periods

hi..i have taken mtp kit by cipla for abortion after 21 days of pregnancy..initially i had cramps in my abdomen but it has been 15 days my periods have not started yet..please help me whether i should take another pill??? m i still pregnant?? what should i do "??? as u said i have taken urine pregnancy test and it is negative. now what should i do so that my periods come again.it is sure that i m not pregnent but my periods are not coming..is there any medicine that will help me in this??? I HAVE DONE A URINE PREGNANCY TEST AND IT IS NEGATIVE... WHAT SHOULD I DO NOW??? IS THERE ANY MEDICINE WHICH I CAN TAKE SO THAT MY PERIODS COME... ALSO BEFORE ABORTION I WAS ILL SEVERLY AND WAS VERY STRESSED ALSO... CAN THIS AFFECT MY PERIODS AFTER PREGNANCY???? PLEASE TELL ME THE MEDICINE THAT I CAN TAKE....