Tweaked tests

I can only see a second line on my tests if I tweak the shit out of them. Color saturation filter is all the way up (evaps/indents don't have color right?), photos taken within the timeframe and the line is the same width as the control line. Multiple brands...Does this mean a start of a bfp (that's not yet visible to the naked eye) and keep testing or have I had 4 fluked tests?