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If you wish to delay/postpone your periods, you should consider visiting your doctor/gynecologist for prescription of pills for postponement of periods (which will be prescribed after initial evaluation to rule out contraindications). These should be started atleast 5 days before your scheduled/expected period dates to be effective. You need to continue taking them for as long as you want to postpone the periods. You will get periods after 5-7 days of stopping the pill use. Visit your doctor/gynecologist for further evaluation and assistance. Be in regular monitoring and follow-up with your treating gynecologist and report any unusual symptoms immediately.
Take care.