Hi ! I have gone through your question and I understand your concern . I advise for your pain to take Anti H2 like Ranitidine( it s a acute medication that act fast) with low your stomach acid and help for the pain .And keep following the diet I would say that if your symptoms is not getting better ,with antacid you should do some .examination to find out the cause of ulcer. If your pain get worse all over the stomach radiate to the back and you have problem breathing, sweating, hypotensive with fast heart rate call the ambulance imidiately. To be clear wich is the right and the best antiacid treatment i would say PPI such Omeprasol 20mg twice a day or AntiH2 twice a day ( ranitidine 150mg ) .We use only antacid when the cause of ulcer is from high acid production. I would arise to have a Helicobacter Pylori test , and an endoscopy. If you have H.Pylori your doctor will start antibiotic ( Amoxicillin/ Claritromycine, metronidazole for 14 days ) with antacid . Wish you good health If you have any other questions please feel free to ask me again .