Dark evap line or positive??

Alison • Wife to Vince and mommy to Cole (Oct 2016) 👶🏻💙 ttc #2
Last month I got a very very faint skinny line (blue dye) and then tested negative the next day (pink dye). This month only had blue dye test left over and got dark blue skinny line. Think it's still just an evap line, only darker? This is so confusing!