Took postinor 2 on 2 sexual events i had unprotected sex today took 1 dose of postinor 2 then during the 12 hr period i had sex again and i took the 2 dose after . will it protect me against 2 sexual events?

Postinor2 does have protective effects against pregnancy, and will to a limited extent act as a contraceptive with the time frames described. Postinor2 and other forms of "Plan B" forms of contraception are not 100% certain for contraception, so if your period is delayed, wait 7 -10 days and obtain a serum HCG test to be certain about pregnancy.