My baby is 5 yrs old. When she is having food she is saying, I am not hungry and stomach pain since last 4 days

A. hi parent keep her hydrated by giving her a spoon of water every hour in the day time keep her at well maintained temperature don't use demineralized water for drinking use simply purified water having tds higher than 350 offer her probiotics and seasonal fruits, jaggery lemon sharbat