Pls Sir Or Ma ,I Took Postinor 2 Pill After

Pls sir or ma ,I took postinor 2 pill after unprotected sex ,and I took another one d next week and another one the upper week , making it three times in a month,which was last month and my normal date for my period is on 17th of every month ,but up till now I have not seen my period I have to check my self with d PT tester and what I saw was positive pls my question is ,is it possible that I am pregnant ?and if yes any suggested pill to help me get rid of the pregnant .