Multiple pregnancy tests different outcomes


Hey ladies ! I have taken about four tests total so far 3 of them are first response and the last one is one of those Off brands (blue dye) . Now my first two tests are from 12/24 and the brand is first response the super faint lines came up in the time frame and one you can actually see a tad bit of pink to it. I’ll post my four tests here and if you can please tell me if I’m seeing things correctly. I’m just worried because my last two tests have not shown faint lines. My period is due January 3 I know it’s super early to test but I want to make sure !