Pink discharge while on the pill?

Okay I just wanted to come on here and ask y’all girls a question.

This is my first month ever on the pill and I have three active pills left. I am on a 21 pill course.

I’ve been having a slightly pinkish discharge for about a week now, but no period. Is that normal or should I

talk to my Gyno?

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Also my period calendar is predicting my period in 10 days, but I have 3 pills left.

Will my period start as soon as I have my 7 day break from the pills, or as the calendar predicts - in 10 days?

I have no idea why didn’t I ask my Gyno this but here I am, asking you girls for help and advice.