To delay your period, the most common prescription medication is Norethisterone, a synthetic progesterone. You typically start taking it three days before your expected period and continue it for the duration you wish to delay (usually up to 17 days). Alternatively, if you already use a combined contraceptive pill, you can delay your period by skipping the pill-free break or placebo pills and starting the next pack immediately. Please consult a doctor or pharmacist first, as these options require a prescription, are not suitable for everyone, and can cause mild side effects like bloating or mood changes.