My red sex link was puffed up, walking slow, had yellow discharge coming from her vent and wasn't interested in eating. I read online it was possibly an egg or soft shelled egg stuff. I put on some gloves and braved the idea of doing things to my chicken I never imagined. Quickly I realized she wasn't having it and I didn't know what to do. So I felt her belly area toward the vent, rubbed it a bit, and moved the area around gently in hopes whatever was stuck would work its way out. I went in the house to get a flashlight and came back out to the coop and there on the ground was a soft shelled egg under where she stood on the roost. Whew!!!!!!! I am so relieved. But now I'm fearful this may be an issue for her. Someone keeps laying soft shelled eggs. I provide them layer crumble with calcium and a side of oyster shells. I also feed them their own egg shells. What would be causing her to continue laying soft shell eggs? They have only been laying for about a month.