Feeling insecure about faint positive with blue dye.

I keep seeing all this negative feedback about blue dye tests & now I'm insecure about my faint positive 8dpo. I am now 11 dpo (AF due in 2 days) I'm still having pre menstral like cramping, vivid dreams, (sneezing a lot which is weird) & bloating. But now it feels like it's all in my head lol. Anybody have any past success stories with blue dye tests?​