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Starting birth control pills can and will change your menstrual cycle.

Since you are experiencing a period every two weeks, please call the doctor who prescribed them to you and explain what is happening. The pill is suppose to help regulate your period. You might need to try a different pill, but again, that is all up to your doctor.

Here is a great article from the EmpowHER community about why periods are irregular and why one can come every two weeks.

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