Need Some Help

Sam

I normally have 28 day cycles. When I ovulated early, both of my apps updated my missed period projections (by close to 4 days). I am currently 12 DPO and got a BFN. Which is fine. But I want to know when you think my “missed period” is? 14 DPO which is this Saturday or the 28th day of my cycle, which is Tuesday. Thanks!