Thanks for writing to health care magic.
Stomach pain could be because of multiple causes. Some times there may not be a significant cause. Some times children complain of stomach pain when they are force fed or asked to do a thing that they do not want to do.
Some times stomach pain could be because of various causes like gastritis
, urinary tract infection
etc which require further investigations and management.
Continue to ask further queries as required.
Hope this helps.