I'm CD33 right now and supposed to have had AF 4 days ago. Still have nothing and getting BFN. I don't feel any PMS symptoms like I normally do. My BBT is remaining elevated but I'm not sure that even means anything. I'm just annoyed cause I'm usually very regular. I feel like i would have had a positive pregnancy test by now. I just want to know one way or the other. Anyone have BFN after missed period but find out later they were actually pregnant?