"Tweaking your pics"

Am
Hi! I'm wondering if you guys think that if you can see it much much clearer in the "tweaked" pictures and the black and white pictures that it still means it's positive or are we tweaking the pictures to see the Evaps? Has anyone only see their positive in the tweaked ones and ended up pregnant? I only ask because I can see a line when I make the picture black and white but not so much in the regular picture and in person I can see a faint line if I don't have line eyes haha just curious on everyone's opinion on it !