It sound like she might be having problems, yes. I posted on here a while ago with these exact symptoms and was so worried ended up bringing her in for the evening and syringing water into her beak as she kept it open and was panting, all fluffed up and wings held out...I honestly thought this was it, and she was about to keel over. The next morning at first light i got up to see how she was doing an she'd laid 2 eggs in one go!!! One had obviously gotten stuck whilst the other was on it's way - poor old girl, no wonder she was in pain - would be like us giving birth I guess!!