New here! Are blue dye tests not as accurate as pink dye tests?

So the top test is the one I took yesterday morning, and it gave me a vvvfl. It was the first positive I've had since I started showing symptoms, but I wasn't sure.

So I went and bought another brand, and took one that same day. That (2nd picture) came out negative.

I took the new brand of test again this morning to compare results, and I see another vvvfl. Or is it just an evap? Picture was taken right at 3 minute mark.

Help! I don't know if I'm crazy or if there is actually a positive result in two of these tests! I've been testing at least once a week the last three weeks since I started showing symptoms, and these are the first things that seem even partially positive since then!