My gf completed her periods on 09sept and i had unprotected sex with her on 11thsep and within 32hours she had taken unwanted 72, and on 22sept we sex again but with protection & within 30hrs she had taken unwanted 72 again, and on 2nd oct she got her light periods which was stand for only 1 day, and on 23oct we had done pregnancy test via prega kit which was negative, so i want to ask that she has been completed 1month from 2 oct when she had light periods, from then untill she have no period.