I have 4 pullets and 2 of them started laying eggs today. A third pullet is acting funny, she is panting and went back to her roost midday. This evening she is walking around a little but stops and rests. She is still panting some, her tail is low and she kind of squints her eyes and holds still for 5 minutes at a time. Do you think she is egg bound or could this just be a difficult first egg?