Faint positive or evap?!

Jenny
I'm currently 10 dpo. Took a FRER this evening which looked clearly negative. I took the test apart (I know, I shouldn't have!) and then happened to look back a couple of hours later, only to find the faintest of faint pink lines! Here is a picture and also an inverted picture. What do you all think?! Going out of my mind!! 

Vote below to see results!