In the current scenario, you have been prescribed this medication to give a kickback to the ovaries to induce a period. It also helps to see if the uterus
responds to the withdrawal medication. If you have always had regular cycles, it may be a temporary hormonal
disturbance that has created this situation. Yet, you should have a complete evaluation to ascertain other causes responsible for this delay. You can expect withdrawal bleeding 3-7 days after completion of the treatment. Hope this helps.