This is tricky. Because I've had it happen when I wasn't pregnant but I've had it happen when I was pregnant, too. If I can't see it without squinting, holding it at weird angles, taking it apart, tweaking, etc...It's negative. Any true early BFP I've had has been able to be seen from at least a foot away in any light. And I'm an early tester too. This pregnancy, I was getting these shadows on every test I took. Which was about a dozen before I said I was done torturing myself and I just waited until AF was a couple days late and there was my blazing BFP (3 of them on different tests). I secretly knew that they were the start of my BFP but I just couldn't fully commit my heart and brain until I saw something definite. I convinced myself I just had bad tests from Amazon or was going crazy. The only thing that can really give you and answer is to just keep testing and seeing if AF shows up. Hang in there. Hope this helps some.