Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. I think that scope should be repeated if symptoms persist for so long. Certain degree of bloating is normal but in case of excessive bloating, it may be a sign of food allergy, hiatal hernia, IBS, or inflammatory bowel diseases. So, you should repeat gastroenterological work-up but first try to change your dietary habits, which means: eat smaller meals but more frequently, avoid fried and spicy food, take menta tea, avoid alcohol and coffee, eat probiotics and milk products, boiled food and vegetables. Also, there are medications such as Flobian, magnesium oxide or certain laxatives which may relieve such symptoms, but in case of hiatal hernia surgery may be required. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Ivan R. Rommstein