Faint Pos to Neg to Faint Pos again???

So a couple days ago I posted and had a faint line and you guys said you could see it and try again in a couple days and I just did and it doesn't seem to be getting any darker actually the one I took yesterday morning was even fainter and this is this mornings one. ??? Help I am three days late? I should be darker than this right? Or is there nothing there and I just have line eyes?