We have a 2 1/2 year old RIH hen that has had a hard, swollen underbelly for 7 weeks. She is NOT layingShe has been to the vet and x-rayed and ultrasounded. No broken eggs. At the time, she had a gas bubble and some fluid in her lower intestine. Which is 'normal' She had bloodwork done for parasites, (guardia), etc. All normal. She has regular appettite and drinking. She waddles a bit due to the swelling underneath. She isn't laying, and hasn't laid for 7 weeks. Please help!