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If she has been regular in taking her birth control pills at scheduled time daily, and has not missed taking any active birth control pill, she should remain protected. Due to hormonal changes, she can have delay in periods. She should get her periods by the time she finishes with taking the placebo/sugar pills. Wait and watch for her periods. She should visit her doctor/gynecologist for further evaluation if periods are missed or abnormal, or if she suspects chances of pregnancy.
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