Help 12 DPO

KO

Hello-so I am 12 DPO and I usually have my period before 12 DPO. But I am 2 days late on my period and all tests are BFN. I have had an increase in discharge the past few days and today there was some pink/light brown maybe tinge to it with only one wipe today. I have zero symptoms for early pregnancy or period. Any thoughts or advice?? I have been very regular on my periods each month so I’m just confused.