Hi and welcome to HCM.
You shouldnt be very concerned but further testing must be done. Ca 125 is used for detection and following ovarian and some other cancers,but it can be found in many benign disorders such as endometriosis
, ovarian cysts, pancreatits or ovarian infection
,inflammation etc. Ovarian cancers are rare but it can be found in your age unfortunately. You shoulds do ultrasounds or CT scan
to rule out something serious. Probably this will be ovarian cyst or menstrual or hormonal
disorder which is easily treatable. Wish you good health.