Hi, because I have PCOS my doctor gave me a Duphastone to regulate my period. I drink it 5 mount from 14 till 25 day (2 pills) and till now get the period evry 3 day after I finish. Now it has pass 10 days I didn t get it, I went to my doctor and I m not pergnant, also she told me that she doesn t see that I have some bleeding. She told me to waith one week and then if I don t get it I came to see here again. Also she find out that on left ovulary I have a very large cyst. I don t know what that mean, can you help me with some advice?