Vvvvfl the stark white?

I got a vvvvvvvvfl yesterday with a short afternoon hold. Retested this morning with FMU and got a bfn, I can’t see anything. Anyone have any experience with this? Was there just not enough time for the hcg to build? There was about 15 hours between the test. But at the very least shouldn’t I have gotten the same vvvvvfl this morning too??? Photos below, it’s hard to get proper pics of these. I hope some of you have some positive stories, I got too excited last night.

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