Vvvvfl?

So I’m 7dpo and it’s 3am and Idk but I wanted to test and I took my flashlight and I swear I see somthing but maybes it’s my eyes

But when I flash the light from the back I can definitely see a light line.

Is there always a line like that in every test?

Is that normal or something?

Has anyone else see a faint line when using a flash from the back of a test this early?