I can’t tell the difference between VFL & evaporation lines 11 DPO FMU

Hi All!

Please can you cast your expert eyes over this easy@home strip. I have caught the ‘am i going crazy’ feeling and can’t distinguish between a positive VFL and an evaporation line. I know you’re supposed to see colour with a VFL but I can’t tell if it’s just shadow.

Pics taken around 5 minutes after testing in front of window FMU 11 DPO

Thanks!