I’m not sure if this is negative or positive?

I know blue dye are meant to be bad for indent lines but it’s all they had or own brand blue dye. I’m 12dpo and it’s with fmu. We both think we sort of see something but I don’t know if it’s just cos we want it to be there? Tia

Thank you everyone for your help, I’m crossing everything that this is our rainbow baby on its way. I’ll update once I’ve done another test.