We had sex 4 feb and she take unwanted 72 after 4 hours after take lunch. She got time on 15 feb but it was very low quantity. After that still no any time come. We checked 2 times with pregnancy test kit but always it shows negative. She is not getting any symptoms of pregnancy like bombetic. We both in tension. I am out side of home so can not go to home. please suggest what may be problem and what have to do now? pregnancy test done on 25 march and 1 April. Both test shown negative but still time not came. Please suggest what may be problem and what we can do now? If any medicine for it then suggest please. We are in tension.