Do blue dye evaps have color?

Casey
Okay so I'm 7 days late on af, 17 dpo, and only had slight pos on blue dye test and everyone told me to test again on pink dye and I see nothing... 
Past blue dye
With color. 
Past pink dye with no results.... Been almost a week between the pink and blue dye test as well. Just don't want my hopes up and I plan to go to the doctor next week if no af. Other symptoms include nausea, dizzy at times, sore boobs, tired all the time...I feel a cramp every now and then but it does not compare to my period cramps. Any advice or expirences are welcome. 

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