hi i have a 28days cycle, i saw my last period on the 28th of september, 2012, i had unprotected sex on 10th of october though by midnight then i took postinor 2 on the morning of 12th of october but i had unprotected sex again the same 12th of october then took the 2nd tablet of postinor 2 after the sex on 12th. is it likely that i may be pregnant cos im yet to see my period as i speak. thanks.