I have just started talking Alesse-28. I started it november 9th and ended it nov 29th, like I was supposed to. However, it's been 6 days and I still don't have my period. I'm also stressing like crazy over it. I keep thinking I'm pregnant, which I really can't even imagine. I have had some cramps, and had a headache (which is usually my indicator that I'll get my period the next day), but nothing has happened. I'm just wondering if starting a new pill, especially Alesse, could cause my period to be late? Or if anyone has experienced this on Alesse?
I was previously on Yasmin, and during my period week it would take three or four days after finishing my pack of pills to get my period, but never six-seven.

Help!
-Cel