I am 33. I was diagnosed when I was 31. I have had symptoms since I was 12 (immediately after my tonsils were removed for getting strep throat so often, I got strep throat again -- without the tonsils -- after that, it was migraines, psychiatric symptoms, etc...). Most dx my entire life before the Optic Neuritis when I was 31, and the subsequent MRI and noticing of lesions, were labelled idiopathic.
The cysts I were getting were growing to about 5cm or more, also, before rupturing. It was quite painful. The weird thing was that some of the cyst appeared solid and some fluid filled -- that was almost worrisome to doctors until they would rupture and start all over again. (This last one I had, though, stayed with me for 2 years.) And I think the entire reason they were able to get so big is that that particular ovary was also so large. Cysts are normal, and they come and go; they are just usually much smaller. It is when they cause us problems that we need to take action.
"If a man does not keep pace with his companions, perhaps it is because he marches to the beat of a different drummer. Let every man keep step to the music that he hears, however measured or far away." - Henry David Thoreau ~Audrey