hi ..i m concern..i had unprotected sex on the 13/2/16 at 11;pm...then i bough the pill the following day then had sex on that same day at 6 o'clock . by 8 pm i took the pill. they said 12 hours after i should take the second pill, i took the second pill the following day but i was 1 hour late..will it still work because i am worried. it was just an hour late for the second pill