I have a known hiatial hernia ulcers as of july 2013. This past week I keep having pain under lower rib cage, dull sever pain. Belching a lot helps?

See gastroenterology. You may need to have an upper endoscopy done to see if there is active gastritis, reflux esophagitis or peptic ulcer disease. You may need to have testing for h. Pylori if not done, and to have your antacid regimen maximized, depending on the findings. Also seeing a dietician may help in avoiding foods that worsen this discomfort.