I was diagnosed with a 9 cm complex tumor on my right ovary. i have surgery on 11/28 to remove the mass and my ovary.should i be worried about cancer?

Depends...: The answer to this depends on several factors. You may be at increased risk for cancer if you have certain, characteristics within the mass, a high (>200) ca-125, strong family history of certain cancers, ascites or other suspicious pelvic findings etc. Based on having no other information, your age alone puts you at low risk for cancer.