my last pill of diane 35 was last Dec. 23, 2013 then I had unprotected sex in the morning of Dec.26, 2013 then I take Charlize pill at the night of the same date. I'm afraid now, I still dont get my period. I tried to have a pregnancy test last January 04, 2013 but it's negative. Now, it's January 9 but still I don't get my period. Is there any possibility of me getting pregnant?? Pls help me. I need a very urgent answer.