25yo female with achy abdomen, gassy, constipated. no blood in stool, no vomiting. stomach tender to touch and stomach muscles hurt. serious?

Achy gassy stomach: May be gastroentritis ,short lived, or may be food intolerance,gluten sensitivity, gallbladder ,gastritis with or without h pylori or IBS. Can try probiotic and keep food diary and see what happens after eating milk or soy or gluten products the major culprits. F/U with gastroenterologist/ nutritionist and or allergist for food intolerances.