Aww, masakit talaga ang tiyan na hindi mo alam kung saan nanggagaling, di ba? Kailangan mo talaga mag-check with your doctor para ma-rule out kung ano talaga ang cause, could be anything from gastritis, indigestion, constipation, or something else, so better safe than sorry, lalo na kung matagal na or sobrang sakit. In the meantime, try drinking warm water, take it easy sa heavy foods, at observe kung may ibang symptoms like fever or vomiting kasi yan na red flag. Hope you feel better soon, mama!