Thank you for writing.
You have been changing up your usage of the Pill over the past few months to avoid periods. Now that you are back to having a 7 day break, your period (breakthrough bleeding) is likely adjusting.
You can take a test to confirm this but it'll likely be negative. Give yourself a few days and don't stress so much - you're doing everything you can to prevent pregnancy; it'd be a near miracle if you got pregnant! Stress can change the menstrual cycle, even when you're on the Pill.