I am 23 years old and i just found out that i have a 5 cm. cyst on my right ovary. I'm following up with a gynecologist this week, but I was wondering if I should be worried about the size of it. If it's this large, does that mean it has a higher chance of being cancerous? The E.R Dr. told me it has been there since Feb. of this year. Im just really worried because problems like that do run in my family.