So confused

Francesca • I`m 31 and We just had our 3rd baby! A boy after two girls! Lots of losses 😔 my first arrived at 28 weeks, after five years of trying, our second arrived at 34 weeks, and our third arrived at 34 weeks too! So blessed!
Period should have started on Friday, I'm never late! I always come on at 11/12dpo without fail. I'm now 14dpo, making this the single longest period I've ever had as I ovulated on cd14 and I'm normally on cd12! Still BFN's, not even a hint of a line! What the hell??? If I don't come on today then I'm screwed for BD in my fertile window next cycle because of DH's shifts! 😢😢😢