Post covid. A worried mother only?

Hi Me and my husband were positive. After my recovery, my husband & daughter got infection. She was positive on 15th may but showed only fever symptoms for 2-3 days. After that she was fine and showed no symptoms. Though we still got her tested after 15 days she was negative. Now since yest she had one episode of loose stool not watery. Today also she had one episode of stool not very loose but not very tight. So we spoke to her pediatrician who suggested to give econorm mor eve and lanzol tab junior once a day. Shud I be worried, is it indigestion or post covid ? When shud I be worried and what shud I do now? Do children have such post covid symptomps or is it I m becoming a worried mother only? Please guide somebody