Sorry about your hen... :(
If you go to the forum list and click on the forum for emergencies/illnesses, there's a button that said something like create post or create thread. Easy peasy!
Good luck with your girl...
I agree that it sounds like EYP. It doesn't have a good prognosis, unfortunately, if that's what it is. Hopefully, draining the fluid will make her feel more comfortable. And I hope you can get the antibiotics and that they help. I'm sorry she's sick, and I wish you luck.