Clearblue pink dye

Leasie

Okay so a couple days ago I took a clearblue pink dye and got this very faint line (it's pinker in person)

But I took one today, same brand, and all I got was one of those watermarks that moves when you squeeze the sides. Does this mean the test is invalid?

(Photo is of the test from a couple days ago, not the watermarked one)