I had a sex with my gf one day before her periods.. and next day she was in a periods after a sex , and I gave her unwanted 72 pills more than 50 hours later, she ate pill in already being in periods.... as she ate a pill her periods bleeding stopped automatically within a 2-3 hour after taking a pill, and now 3-4 days gone her periods not yet continued, and today she feel headache and uncounciousness a bit.. please tell me is she safe from pregnancy? or when her periods will continue, after how many days, according to above situation??