Hello, Good morning, I read your history in which you mentioned unprotected sex n after that your g.f took unwanted 72... Hopefully your g.f had took that properly... Now after that your g.f had vommiting... So may be with vomit content her drug also vomit out...n there is no effect so...this is one possibility there... But still you didn t mentioned time of vommiting n time between vommiting n drug ingestion... Now coming to your main problem that your g.f had no menstrual bleeding still since 1 month after unprotected sex...so I suggest please confirm the pregnancy first by upt kit (urine pregnancy test kit)... May be due to vommiting drug also vomited n due to no effect of drug there may be pregnancy unwanted pregnancy...so please confirm first... N after that consult your obg-gyn physcian... Thank you, Regards, Dr.Ravi Kotecha