Instant white lint to vvvvfl?

I caved and am 7 or 8 dpo. I used a first response and the line was white as the pee was spreading through. Then about 2 minutes disapeared and I think a see faint pink. Has this ever happened with any one, the white line? Maybe indent? I am using first response.

I used the one pregnancy test app and zoomed in.

Sorry for being a crazy pee on a stick lady 😬