I feel like I'm losing my mind.

I posted yesterday thinking I had line eyes..only for you ladies to tell me you saw the same faint line that I saw! :) I had tested with a Target brand blue dye test, with FMU. I have used these tests several times before and never gotten any sort of line, not even an evap. I had one more blue dye left, so I used it this morning with FMU and saw another faint line, so I broke out the FRER that I've been saving and took one with the same sample..and there's nothing. Now, I'm wondering if this has happened to any of you, and if you ended up being pregnant or not? I'm planning to test again in a couple days but I'm so anxious! Any input would be appreciated. :) First two pictures are yesterday's test, third and fourth are today's tests.