Chicken keeps squatting to poop but very little comes out

[Chikenshiken]

My 2 year old bantam hen seemed weird tonight and she kept squatting trying to poop and she seems extremely uncomfortable. I checked her vent and it looked a bit red and like there was feces trying to come out but couldn’t. I’m extremely worried, is it egg bound or possible prolapse vent? Is it possible she’s just constipated??

 

[Chikenshiken]

Update: she actually passed a shell-less egg that broke inside of her. She seems better now and ate and drank but I heard this can still cause infection. What should I do now?