Hi Doc I Had Sex With My Gf 10 Days

Hi doc I had sex with my gf 10 days ago and her normal menstruation date had already gone. After having sex she had unwanted 72 pill right after sex but now I m in tensed as her period date is gone and still I didnt see any sign of menstruation to her. So please tell me is there any chance of getting pregnant aftr taking unwanted 72 pill. Please suggest me