Trying to delay your period by taking oral contraceptives before your period is due may not be particularly effective. If you want to postpone your period, it may be more effective to take short-acting oral contraceptives from the middle of the period or from the 5th day of your period until the time you want to postpone it. If you take short-acting oral contraceptives, you may not be able to delay your menstrual period, and it is possible that your menstrual period will come on time and will not be affected by any medication, so you will not achieve the desired effect. In later life, menstruation belongs to the normal physiological cycle. If there is no special demand requirement, do not postpone menstruation as often as possible, so as not to cause a longer cycle, but also to cause a certain change in ovulation, which will have an unnecessary effect on the body.