Ok I took this test in the morning and it looked very faint (but darker than the previous two days) and three hours later I came back to it looking like the second picture ...... it looks completely different ..... I just wanted to make sure I didn't get a disappearing positive and what I have now is just an evap line? I don't know what an evap line looks like! I know you should not read results after ten minutes but I also know a true positive should last for 48 hours ..... according to this app I should be 4 weeks 2 days (sorry if this is the wrong board, but this is the place for test questions right?)