BBT and AF help

I'm 14dpo and AF is due today. However, I didn't have a bbt drop and I have always had a bbt drop the day she shows up. I've had a string of bfns and nothing looks faint, they're all ghost lines or evaps. Most of my symptoms are sticking around too, they're usually gone by now. I have been regular in my periods for 11 years, and they have always come on time. My cycles are 27 days no question at the moment. My cervix is also high and spongyish, I thought it was meant to be low and hard before period.