Hey, please tell me I had sex with my girlfriend on her last day of her period, condom was there , but we were not sure about whether it was effective or not so she took unwanted-72, after taking the pill she had a brown discharge from her vagina I guess after 3-4 days taking the pill, her periods are delayed by a week , she also did the home pregnancy test , and it was negative , is there any chance of pregnancy . Please help and reply ASAP Thank you !