Is it normal to have a dull stomach ache after a meal?

No. It is normal not to have any pain after a meal. Abdominal pain and the associated possibilities of diagnoses are endless. It is important to talk to a doctor to obtain a detailed history, a thorough exam, and tests that can confirm or rule out what we suspect you may have. See your doctor asap to workup your gallbladder and rule out stomach pathology such as ulcers or tumors.