Dorothy is a 22 week RIR. Last week she layed 1 small egg and 1 large egg. On Monday night she acted ill. Just standing in one place or laying down like she needed to lay. I Tues. morning she was good as new, but in the box there was only a wet gelatenous white substance - no shell or membrane. I thought maybe she ate the egg so I put a fake one in there. All day yesterday she acted fine. Late last night she acted ill again - mainly standing with her eyes half closed and her back end humped up. Twice she let out a thin egg white like substance. This morning she was in the box sitting on the fake egg and a shell-less like one she layed. But it wasn't a full egg - mostly white almost no yolk. It was all gooey and stuck to her. I took her in, washed her off now she is fine grazing with the others and running around. What's going on? There are six, two others are laying nice strong eggs. The other three haven't started laying. They are eatting Layena have free access to oyster shell& grit. I give them a handful of cracked corn & sunflower mix as a treat each day. Any thoughts?