Hi there. The CA-125 is a cancer marker used mainly for post-menopausal women and/or women who have had cancer, to see how everything is. In pre-menopausal women is not very reliable since it can be elevated for several reasons like endometriosis, cysts, etc. So if you are not certain, talk to your doctor.
Best wishes,
Neta
Thank you Neta
Here is a good summary link
best wishes
http://www.medicinenet.com/ca_125/article.htm