Very poorly hen; can anyone help?

Hello all. I have a 2 year old hen who went off her food and 'puffed up' on Thursday. I took her to the vet on Friday and he said her temp. was slightly raised but could find nothing else wrong with her. He gave her an antibiotic injection. She is regularly wormed and has no mites. We have brought her indoors today as she was just lying on the ground in the cold. Her abdomen is now contracting regularly and I don't know what else to do. She is a dearly loved pet of our seven year old and we would hate to lose her. Can anyone help? Should be put her in a warm bath perhaps?

If you're going to give her a warm bath I would keep her indoors tonight in a hen box or cat carrier as it's below freezing    If you do, make sure the room does not get too hot 

Good luck with your girl and I hope by morning she's much improved

Good morning and thanks for your advice. She hada 30minute bath last night and seemed to perk up a bit. She had something to eat and drink and walked around for a little while albeit with a very rolling gait. We kept her indoors last night but sadly no egg. She is still constantly straining so about to pop her back in the bath and hope for the best.

she could be getting ready to lay a soft egg, the hunched up unwell looking points to theis, as does the straining. This can last a few days as it is very difficult for them to pass an egg without a shell - there is nothing for them to strain against. Keep a close eye on her to make sure she passes it safely - if it breaks inside her the others will peck at her rear end to get the dripping egg and eat it. This can lead to her being pecked to death as they will often draw blood and they go into a frenzy for blood.
If it does break inside then ideally get her to a vet asap for antibiotics to prevent internal infection.
If it passes ok then she will soon perk up as if nothing has been wrong.
Make sure they have access to crushed oyster shell all day every day to help promote strong shelled eggs  

you could try a old remidy of a bit of epsom salts mixed with water  hope all goes ok

You could try another bath and you could also try gloving up, putting some lubricant (vaseline/KY) on your finger and then gently up her vent which might help her pass an egg if she is egg bound.

As above Epsom Salts is good, Have you tried it.. Cheap & Effective.

That sounds more like it. Good idea to nip her off to the vet sharpish and the timely antibiotic was a good idea.  Keep an eye on her