My girlfriend and I had protected sex 48 hours ago, and although we used a condom, she said she didn't had periods, she usually have them by 10th. I checked the condoms post usage, none broke. My girlfriend was undergoing treatment for UTI + typhoid 15-20 days ago, and she was also getting some antidepressants as well. We were worried for this delayed period, do I give her unwanted 72 or any other anti pregnancy pill?