I noticed on Saturday evening that one of my white leghorns (23.5 weeks old, started laying about 10 days prior) seemed to be acting funny. She was standing under a tree while the other hens were foraging in the yard and didn't move at all when I picked her up to put her back in the run. She then stayed in a corner of the run for most of that evening until she was the last one to go into the coop to sleep. I was hoping she'd be better the next morning, but when she came out of the coop she didn't go straight for food and water as usual but instead went to a corner under the coop. She finally ate a little bit, and when I let them all into the yard she did a bit of foraging but mostly stood around with her tail feathers down. On Sunday evening I finally brought her in the house and gave her a warm bath and oiled her vent in case she was egg bound. She stayed in the house in a dog crate overnight. Yesterday morning she drank a good amount of water in the morning and ate a little bit of food, but she was still standing in one spot with her tail feathers down. I got her into a vet with chicken experience in the afternoon. The vet did a physical exam (her vitals were normal and her body condition good) and felt inside her vent but couldn't feel anything wrong in the upper part of it. I let them anesthetize her to do a more thorough internal exam. The vet said she could feel a soft oblong shape deep inside her and even see the tip of it, but because it's still covered in layers of tissue, she couldn't tell exactly what it was or remove it. It could be a soft-shell egg that hasn't left the oviduct. Rather than pay for an expensive x-ray that wouldn't really change the course of action, I opted for supportive care. The vet gave her fluids and calcium and vitamin injections. I bought some liquid calcium to mix with her food. I brought her back home and kept her in the house again. Today she seems worse. She's breathing heavily with her mouth open, and her backside is pumping up and down nonstop. The vent itself doesn't look red or swollen, but after giving her another warm bath this morning, the rest of her has dried but the area around the vent is still wet. I haven't seen her drink at all - though several times I've seen her standing with her head over the water bowl but not drinking - and she has barely ate a thing even when I offered all sorts of things she normally loves. I can't give her the liquid calcium because she won't eat. She's hardly pooping at all, and when she goes it's watery with just a bit of very dark green. I think that is a sign of dehydration/starvation? I'm so confused about what is wrong with her and what to do to help. She laid her last egg around 9 or 10am on Saturday, and I first noticed her acting strange around 5pm. Isn't that too early to be considered egg bound? Is there anything I can do to make her eat or drink? I've tried putting water in her mouth with a dropper but wasn't very successful. I've seen posts where some people put in a feeding tube, but I don't think I would trust myself to do that. Is keeping her in the house separated from the others the right thing to do? I'm very new to chickens, and I appreciate any advice the more experienced members can offer. Sorry for the long-winded post!