Hi, please comment if you know of what could be wrong with my chick. She is 2.5 weeks old, Americana purchased from Ideal. Her belly is swollen some, not a lot. It is also bear (no down) from her vent to between her legs). The opening of the vent is protruded. She has been seen moving around, eating and pooping. She is slightly smaller than her hatch mates. I am feeding SS medicated grower feed.