Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. There is a cyst in one of your ovaries. Nothing to worry as it is benign (non cancerous) indicated by CA-125 level. Since the size is increasing, it is better to go for surgical options. It can be done by laparoscopic techniques and is a simple procedure. Consult your gynecologist and he will direct you accordingly. Hope I have answered your query. Let me know if I can assist you further.