I had a sex with my gf at 13/6 which is unprotected and she have taken a ipill 14/6 and again we have a unprotected sex at 15/6 and she have taken a unwanted 72 on 17/6 and according to her period cycle it's should be going to have a period form 18/6 but she didn't get the period now. What should I do now please help me out it's that pills work or not. Plzz help me out?