Is this positive

Ladies,

Do FRER ever have evaporated lines or shadow lines??!? I took this with FMU and within the time frame saw the below photos! I am 16 days post trigger shot (I have PCOS and have been cycling through letrozole(femara). I’ve been peeing on sticks like crazy. Finally I did a FRER. Can someone share if I’m losing my mind and seeing a line or if perhaps these pink dye tests show a shadow line of sorts?? Thank you. Husband and I have been trying for 2 years and I’ve been praying hard! If you could help it would be appreciated!