TTC Ladies please help!! 7 DPO with two faint bfp and one bfn!!?

So I know it is too early but I did it anyway;( The first response box states that you can test 6 days before period so I tried. I tested this afternoon at about 2. With both tests I only used a very small amount of urine that took a bout 2 minutes to move through the test window as that was all I could produce and to my surprise both had so so so faint test lines!! They showed up within two minutes. So then my husband brought home another first response a couple of hours later. I took it again but this time I had much more urine to test with. BFN!! Urgg... anyone ever have this happen?? Do evaps show up so quickly if there isnt enough urine? I mean, the wetness definitely moved through the wondow and the control line was super bold and pink and the test lines were extremely faint and hard to tell if they were pink. But the last one was no line at all :(