My period is due Monday, I have taken 4 early response tests. both of my stores were sold out of pink dye so my choosing was between digital and blue dye. All 4 blue dye test came up with the positive line but the lines look digferent on each test. 2 are faint but noticable thick blue lines the others are light, vvvvvvfl blue lines. What do y'all think? Does this sound like all evap lines or BFPs? Here is one of them. The line showed up within the 3 minute time frame.