Hello, and thank you for your medical question on e Health Forum.
From the available history, the symptom of post prandial abdominal discomfort could probably be due to Gastro Esophageal Reflux disease or Peptic ulcer disease.
Peptic ulcer disease, where in erosion of the gastric or duodenal mucosa can cause severe and sometimes intolerable pain. Pain is usually caused by the ulcer but it may be aggravated by the stomach acid when it comes into contact with the ulcerated area.
Treatment for gastric reflux, peptic ulcer disease would be via diet and lifestyle modification, weight reduction, physical exercise, and medications.
OTC antacids (Tums, Mylanta) or omeprazole (acid reducing medications) will help your symptoms.
You might consider consulting your physician or a gastroenterologist for additional evaluation and treatment.
I hope this helps.