could i still be pregnant?

Ely

I am very very very regular I mean down to the hour... (you know what I mean). ttc for two months. DTD two days before ovulation. today is supposed to be my first day of af. and she hasn't arrived. Nor is there any sign of her. I am very in tune with my body. I tested today. and came out bfn. could I still be pregnant and tested too early. or am I sol for this month?