You are on the Feb testers thread!
Of course I don´t mind you asking!
I did not know the difference either so I asked as well.
Well the doctor told me a long story of why some cysts fill with blood
, something ruptures and they bleed inside. That is not an issue if it disolves, but it could grow or it could develop blood clots inside, and if it ruptured according to my doctor in some cases it could get infected or even damage that ovary.
He did say not to worry as they have found it and most cases they just disolve, but because it is there they are monitoring it just to see if it goes on its own, if it grows or develops the clots and if tha happens they will thry to disolve it or surgically remove it. It is more being cautious than anything really. Which I am glad as I know I will be fine!