still BFN 2 days late

D
With my first son I had a BFP as early as 10DPO. this time I'm two days late, 14 DPO (my LP is normally 12 days) and still getting BFN. Did anyone have a similar experience and still end up pregnant? 
I chart and am pretty certain on when I ovulated, give or take one day. I'm not new to charting and pinpointing when I O. 

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