My Gf And Me Had Sex On 21st July And

my gf and me had sex on 21st july and after 4 hr of unprotected sex ,i had given her unwanted 72 pill. her last period end on 20th june...so tell me how many days she have to wait for her period...as her normal period days is passing due to pill i think..today is 5th day after sex but period didn't come...what to do guide me....or any another pill to get period?? if pregnancy test is negative....waiting for your reply doctor...