My Leghorn hen is waddling around with a big butt and bloated tummy. She feel heavy and tight when I lift her. Comb is a purple color and she is lethargic. I put her in a warm bathtub for a while and felt around... I don't feel an egg- she just feels FULL and puffy. She keeps contracting her bumhole like she's pushing, but nothing comes out. My Leghorns don't lay regularly anymore so I can't say whether her laying schedule is off or not. Does this sound like she's bound up or something else? Help!