I Had Sex With My Boyfriend For Almost 2weeks, We

I had sex with my boyfriend for almost 2weeks, we started d sex on 14th nyt and it was d same 14th dat I finished menstruating for this month so I took 1pack of postinor2 on either 16th or 17th and d other 2nd pack on 21st morning and I started bleeding on 24th which stopped on 26th nyt..was the 2packs of postinor2 I took enough to prevent pregnancy? Pls I nid answer now because am so confused, I don't know my stand now