so i had unprotected sex on the Sunday of the week I was supposed to get my period, I decided to take 4 Nordette pills around 20 minutes after the deed happened and took another 4 pills 4 hours later then 12 hours later. The day after I got on Yasmin. did i mess up my cycle?? I took a pregnancy test already after my period was delayed and so far it was negative. do i take one again? when do i expect my period to go back to normal?