Spotting for 10 days in a row while on birthcontrol

Patient: I am on the birthcontrol trinessa and have been for about 6 months and recently I’ve started spotting, enough to need a pantyliner every few hours, it has been consistent for about 10 days, should I be worried? (took preg test out of fear of implantation bleeding and was neg) PS my perriod had ended for about 3 days when i started bleeding is it was fresh blood.

Symptoms: Spotting