Hi,
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Primolut-N is prescribed by many gynecologists to help women postpone their periods. These pills 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 your periods after 5-7 days of stopping the pill use. Sometimes you might experience side effects like dizziness, nausea, headaches, depression, breakthrough bleeding, abdominal cramps, etc. Visit your doctor/gynecologist for further evaluation and assistance. Be in regular monitoring and follow-up with your treating gynecologist and report any unusual/new/abnormal symptoms immediately.
Take care.