You should not try to change your period if it is not incredibly important, because this can affect the regularity of your period. You can postpone your period by taking medroxyprogesterone 5 mg twice daily. You should start 5 days before your expected date of bleeding and continue it for 10 days or until desired. Bleeding will not occur until you stop medroxyprogesterone. When you will stop it, bleeding will start within one week of stoppage. I hope this information will help you. I will be happy if you ask another question Thank