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If you are not regular with your birth control pill intake, and have missed taking 2 or more than 2 active pills, they will no longer remain effective, and can cause period abnormalities. If you are sexually active without protection after missing the active pills, you can be at risk for pregnancy. You should consider visiting your doctor/gynecologist for further evaluation if you miss your periods/withdrawal bleeding, or if you get abnormal bleeding, or if you develop any new symptoms. Treatment as indicated (based on examination findings and investigations results) would be started to help you. Consider being in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Drink plenty of water. Take adequate rest. Maintain healthy diet and lifestyle.
Take care.