Hey doc, me and my girlfriend had unprotected sex on 15 aug, within 8 hours she took unwanted 72. On 30 aug she got her period (one week earlier than usual) which lasted for 6 days. On 5 september and 15 september she did urine pregnancy test which showed negative results every time. On 30 september on her 1st day of period she had only 5-6 drops bleeding which was bright red. On 1st oct there were no bleeding at all. There are no sign of pregnancy. What to do now?