Suggest Remedy For Hormonal Problem

Hi..I am a female and my problem is that I am having black spots 5/6 days before my periods since 2-3 months – my bleeding is OK I have no problem with that but due to these black spots and water my Periods lasts for approx 10-13 days in which only bloods bleeds for 3 to 4 days rest days passes with starts and end of black spots and water and after period I got itchiness. Two years before my periods were stopped and after seeing a gynecologist and with her 6 months treatment they start again – I had this hormonal disturbance problem which is under controlled now since 1.5 years but suddenly all these itchiness and black spots/water problem arise. Please advise if this is a normal problem or should I see a gynecologist again.