faint positive or evap line?

So 12 days ago I had unprotected sex. He did pull out but obviously that’s not full proof. Right after the deed I took an ovulation test and it was positive so I went to the store the next day and took plan b (even though I heard that they’re ineffective if your body has already started ovulation) since it’s been almost 2 weeks and my period is due any day I decided to take a first response blue dye test with my FMU (top pic) and got the faintest line. So I then went back to the store and got a pink dye first response test (bottom) which is clearly negative however that was not with FMU so I’m not totally convinced on the negative result. I’m just curious if you guys think the blue dye test is an evap line or a faint positive? Any input is appreciated!