Hi,
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The bleeding that you describe is due to withdrawal effect of hormones after stopping with the hormonal pill use, and the efficacy of the pill will get affected since you have missed taking more than 2 active pills. Avoid further pill use and avoid unprotected sexual contact. Start with a new pill pack within 7 days of taking the last active pill, and be regular in taking the pills at scheduled time daily. Visit your doctor/gynecologist for further evaluation, clarification, and assistance.
Take care.