My Sussex hen is just a year old. For probably 5 days now she has been squatting down and straining while making a horrible scream. She sounds like she is in pain. An exam showed us that she is not egg bound. And if she was I’m assuming she would have died by now. Her comb looks good and she eats and drinks some. I’ve given her antibiotics, coconut oil, worms, everything I can think of. No other chicken in the coop acts sick and she was vaccinated as a baby. She is pooping some and her vent is not pastey. It does look maybe a little irritated. Her poop isn’t solid at all though. I just don’t want her to be in pain. Any thoughts?