Missed period while on pill

Hi,
Welcome to ehealthforum,
If you are not pregnant, you should have the withdrawal bleeding/periods by the time you finish with your pill-free week. The hormonal contraceptives prescribed would only help to regulate your periods, and not in reversing or correcting the cause for the PCOS. Go ahead with further evaluation to look at the current status of the problem. PCOS usually responds to treatment with insulin modifiers as most common cause for PCOS is insulin resistance. Consider discussing with your treating doctor/gynecologist about getting started on these along with hormonal contraceptives for better control of PCOS and for regularization of periods. Consider being in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Drink plenty of water. Take adequate rest. Maintain healthy diet and lifestyle.
Take care.