Hi,I recently took norethisterone to delay my period. I took the last pill on the 11th night,and the same night had unprotected sex with a guy I have been seeing. I took Levonelle the next day. This was 5 days ago and although I have had some cramping and a little spotting I have had no period. Have I just seriously messed up my system or is it likely I'm pregnant? Any advice is much appreciated,thanks in advance.