Pink or blue?

Carissa🐧 • 👨‍👩‍👧‍👦 💙💗 Married with a little boy and girl!

I’ve always gotten blue tests but I’m curious to why pink dye is better? I’ve had spotting and have been nauseas ever since. I usually get nauseous before my period is about to start but it’s now been about 2 weeks. I got a BFN today and AF is supposed to start the 12th. When should I test again ?