She coughed and a piece of plum came out, but she swallowed the pit. She seems fine. Should I consult? What should I do?

If the child seems fine and is breathing normally after swallowing a small and non-sharp object like a plum pit, there is generally no need to worry. However, if there are signs of respiratory distress or the object swallowed is large, sharp, or metallic, it is best to seek medical attention immediately.