When I came home from work today I noticed that one of my chicks vents is super swollen. I've never had baby chicks so I have no idea what the cause of this is and what I can do to help my poor little girl. I washed her bottom in some warm water and cleaned her up with a q-tip. There wasn't any hard poo blocking her up. She's just over two weeks old. I also noticed that she's not as big as the others. Please help!