Still No AF in sight

As of today (cycle day 36) my period still hasn't started.  UGH!  It always starts when I don't want it to and never starts when I need it to.  I did call my RE's nurse and she said if it hasn't started by Wednesday then I should come in and they will take a peek at my lining to see what is going on. I've got my fingers crossed that AF finds me tomorrow.