Two days ago when I went to lock up the girls for the night, I noticed a long white membrane looking thing hanging out of her vent. She tried to poop but all that came out was water. She has been drinking A Lot of water. She hasn't laid in two days but has been seen in the nesting box for long periods of time. She is eating and foraging like normal. I have been keeping a close eye on her. This morning when I went to let them out it happened again. Ruby is 2 yrs old. I am new to the backyard chicken owners club. Help!