I am 40 and started again on birth control after
Detailed answer below
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Oral contraceptives can affect the periods and it is likely that the prolonged period is due to the pills.
If the period is not so heavy, you may watch how it will be in the next week. A pregnancy test is always better done every time a period is not as usual even when other causes for the bleeding are possible.
If the period lasts more then 3-4 weeks or is heavy or the bleeding continues to happen irregularly then a visit is necessary to have a gynecological examination with a pap smear and transvaginal ultrasound to rule out any cervical pathology and endometrial hypertrophy.
However, these are less likely the cause of bleeding but might need to be ruled out in case of persistence of bleeding (mentioned above).
I hope this answers your query.
Please let me know if I can assist you further.
Dr. Antoneta Zotaj