Third month that my period comes in the 13th pill?

Doctor, it's already the third month that my period is always coming on the 13th pill, and only when the pack ends ... I do not know what I do, I get half of the menstruating month, that's wrong. Should I stop taking it? Can I start taking another one the next day?
Expert answer:

In this case the ideal is to change the contraceptive, consult a gynecologist that he will make this exchange safely for you.

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