Oh im so confused today, wish my body would stop playing tricks on me

I posted a pic other day (11dpo) of a faint line i got on a clearblue hpt.. unsure whether it was evap or not. Everyone thought it was a BFP but Since then i have had BFN's everyday including a digi yesterday morning. I have done another clearblue test today (in the afternoon, not FMU) and i got another faint line, it came up immediately although very very faint. I dont understand what is going on, i mean if it is a BFP surely it should register on a digi now? Here is a picture of it.
Im 14dpo and due AF today.. no sign of her just yet though..
Has anyone else had neg hpt on day af due and still gone on to get BFP? Thats assuming this test isnt positive..
xxx