Unfortunatly Helenia is away for a couple of days, somebody else might be able to help though...
Does anyone know any websiteS?
I don't know the precise details, only vagueries. Not sure speculation would help you much nonetheless.
If you want, you could describe it more though, see if it points to anything I'm aware of. Kind of like, where is the fluid? How do you know it's fluid - does it slosh/leak ? Any pain?