You have a complex cyst on your ovary. Most ovarian cysts (even complex ones) are benign. A woman who does not have a family history of ovarian cancer has a less than 2% lifetime risk of getting OC.
This cyst may go away on its own so the typical plan would be to monitor it via periodic ultrasounds IF you do not have a family history of ovarian cancer and it does not look particularly suspicious.
What has your doctor said?