What has your doctor suggested is the next step? Sometimes they can't tell until surgery what the cyst is.
Alex
If you do not have a predisposition / family history of ovarian cancer, then your lifetime risk is less than 2%. MOST ovarian cysts, even suspicious looking ones, are benign (non-cancerous). The CA125 test is not accurate at diagnosing OC. A friend of mine had a CA125 in the 1000's and her cyst was benign.
Do you a copy of the imaging (ultrasound or other) report? If so, what does it say? What has your doctor told you?