<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been experiencing bleeding or discharge from my nipple, unwanted hair growth, and my menstrual periods have been lasting longer than usual. What could be causing these symptoms?  <response>: It is possible that you may be suffering from PCOS Polycystic Ovary Syndrome, which is a common cause of female infertility of unknown origin. 