Hello Pixiel - Ovarian cysts are common and mostly nothing to worry about. A pelvic ultrasound will help to define them better and can easily see if there are any worrying features. There are strict criteria for looking at cysts, and worrying ones are referred with a 2 week wait (Govt guideline). It sounds like you are having the tests required. It is a little less common to see them at your age, but without a full medical/menstrual history it is difficult to say. You say they have been seen and I am assuming this was an incidental finding perhaps on another form of imaging. You need a pelvic scan for clarity, and hopefully this is more re-assuring. There are lots of different causes for ovarian cysts, you just need the scan and then referral as appropriate. Mostly they are benign, or non-worrying. A CA125 is a very common, but not terribly accurate test, it needs to be interpreted along with the scan. Good Luck.