Thanks for contacting healthcare magic. You have problem of abdominal pain and change a consistency of stool that may because of gastroenteritis problem. Constipation is mostly because of lack of water and high fiber foods consuption. Intestinal infection may cause constipation problem. Stool examination test is helpful for diagnose. After culture start a proper antibiotics under doctor s suggestion. Avoid fatty foods and junk foods. Avoid gaseous foods like cabbage, cauliflower ,carbonated drinks. ..etc Take high fiber foods. Consent a gastroenterologist for further diagnosis. I hope my guidance is helpful to you. Take care. Thanks.