Is it possible to have IB about 9 days before your period?

Sierra.
I don't exactly know when I ovulate and sometime my period is off from what glow says. I ask this because my discharge has been heavier then usual and I have had extreamy light to no pink/ brown in my discharge for less then two days.  But from what I have read it's normally like a week at most to AF. Also no cramping but a little nausea and headaches. It's killing me 😂 

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