New test with fmu, AF 8 days late UPDATE

Ka
Yesterday I got a vvvfl on one of these, so I took a new test with fmu and I still see this faint line. Line was there at 3mm. But it's blue dye so idk if I can even trust it. It's the only test I had in the house. Planning on buying a pink dye to retest tomorrow but what do you all think?

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