Suggest Side Effects Of T-Diane 35 Medicines For PCOS

Hi Doctor, I am suffering for PCOS(Results came out in Plevic Scan Test). My periods sometimes gets delayed.(like it gets skipped for a month sometimes)I am 5feet 7inches weighing 57 kgs. My thyroid and other hormonal tests are normal(within the specified range). I am getting married in July2011. My doctor had prescribed-T-Diane-35. One of my friend is taking the same medicine and her periods are now dependent on medicines.Can u please let me know the side effects of this prescribed medicine.