Expected AF day 3, cycle day 38...no AF

Hi all, today is the third day in of my expected AF. My cycles have always run as predicted and fluctuate between 34-35 days. Generally about a week before AF I experience all those lovely aches, pains, and moods that indicate an impending period. This time I have had none. My CM is creamy and abundant. I have taken two hpt, one on day 36 and another today, day 38. Both came out BFN. How upsetting :( confused as to what is going on and wondering if there is still a change I may be pregnant? Any insight from you ladies would be greatly appreciated! Baby dust!