I Am 43 Years Female, My Periods Were Irregular From

I am 43 years female, my periods were irregular from a year, last year November 2015 pelvis scan was clear, my last period is July 2016. Today my pelvis scan says right ovary bulky 3.3x3.4x2.5cm vol of 15,6cc A cyst 3.3x2.3 cm with mesh like septae see within the right ovary, likely to be haemorrhagic cyst