Evaporation line?

Opinions appreciated! I have taken three of these Veriquick test. AF is due between now and 2 days as I fluctuate. I had tinted pink discharge 3 days ago, with severe cramping which is what made me test. I don't usually experience that. They all look like this wet after 10 minutes in the first picture and then dry like this in the second photo hours later. Clear blue digitals say negative taken 2 of them a day apart. I used first morning urine. I don't know what an evap line looks like but believe this is. Is this what it is, opinion please?