Am I Safe After Taking 8 Pills Of Trust Post Unprotected Sex?

Hi, I had sex last Wednesday (march 30, 2011) and took Trust Pill (Ethinyl Estradiol Levonorgestrel) as my morning after pill, March 31, 2011. I took 4 pills that night and 4 pills after 12 hours ( with an hour interval). My question is am I safe to have unprotected sex the day after? or do I have to take the morning pill again with the same dosage. Thank you