You should go to the hospital
you shouldn't eat too much candies.
you should sleep a little bit.
you shouldn't force or move too much when you have stomach ache.
you shouldn't eat for a couple of hours to see if your stomach ache goes away.
you should slowly start drinking clear liquids to see if your stomach ache can handle them.
you should put a heading pad over the stomach so that the heat can relax the pain away.
you shouldn't eat or drink dairy products for a while.
you shoul eat more vegetables like brocolli or beans.
you should change what you eat or drink.