Plus sign?

I am 12 DPO, AF should be arriving by Wednesday-Thursday. This is my first month charting. This was taken with FMU. I took a blue dye test yesterday that progressively got darker. It is now a clear blue plus sign. When I found out I was pregnant with DD, I took a test that morning before work and it was BFN. Got home from work (8+ hours at work) and it was then positive! We are now TTC #2. What are the odds are several tests being indents/evaps? Seems like the test would have to pick up some hormone to create a line. Does anyone see the plus sign or do I have line eyes? Thanks!!

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