Earlier today one of my wyandotte hens had part of a soft-shelled egg still stuck part way in her vent. We gently pulled it out carefully, making sure not to cut anything. After that her vent went back to normal, but then she kept going into the nest box and standing straight up as if she was laying an egg. She has been pooping out white, sticky, watery poo. At one point she did poop out what sort of looked normal, but not normal enough because the watery part was slightly yellow in color. We've brought her inside in a large crate and she is still standing upright as if to lay. Sometimes she relaxes a bit but then goes back to straining. It looks as if all the egg shell is out, but I'm not sure. I would greatly appreciate any advice on this situation!