Hello, To delay periods, you can take Norethisterone (5mg)(Primolut N and Utovlan). Commonly three tablets a day are prescribed, starting 3 to 4 days before you expect your period to begin and continue taking it till you don t want periods but it should not be taken for more than ten to fifteen days to avoid side effects. You should start bleeding two to four days after you stop taking the pills. It should not be taken if you are suffering from liver tumours, breast cancer, a history of jaundice or severe vascular disease. If you had or are at the risk of angina, a heart attack or a stroke caused by a blood clot, you should avoid taking Norethisterone. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Nupur K., General & Family Physician