Kids! It's amazing what they can swallow isn't it? I'm sure what your daughter is feeling is the path that it left as it went down her throat. But, at that age it's better to be safe than sorry.
Call your pediatrician's office, and talk to the nurse. Don't talk to the receptionist. That's a waste of time. Tell the nurse what she did and go with her judgement. She will either tell you to bring her in or just watch her and her poo for he next few days. How exciting!