I had normal 5 days period from 4th july till 8th july. After 2 days from Monday it started again and till now (6th day) the flow is same and heavy. I consulted gynecologist sh3 suggested ultrasound. In which Dr. diagnosed-- left ovary shows 30*21 mm sized cystic lesion with internal echoes, possibility of complex cyst. No evidence of internal vascularity. I want to know is this cyst is sign of danger to my health? Is it curable?