Can someone maybe give me an idea what could be wrong. My 9 month old Barred Rock hen has not laid an egg for three days now. She's acting normal, active, playing, eating and drinking. I looked at and felt her vent and didn't see anything abnormal.. no bulging, swelling, nothing protruding??!! What can be wrong?? I just can find anything out of the ordinary wrong with her other than the not laying!!?? Please, any help you can provide me with will be very much appreciated as I'm worried sick over this. I only have her and an Easter Egger and they mean the world to me. These are my very first chickens so I'm really new to all this. Thank you!!