After feeling bloated and uncomfortable in upper abdomen for several months, I had an endoscopy and colonoscopy. Diagnosed with moderate gastritis, esophagitis and diverticulosis. I am a 57 year old female, 5 6 and weigh 140. I eat healthy, normally salads with tuna for lunch, breakfast oatmeal with almond milk or bran buds with almond milk and chicken with veggies for dinner, an occasional glass or two of wine. I take an ibuprofen maybe twice a week. I have been on nexium for 5 weeks now and have a lot of gas since I started taking the nexium. I never had acid reflux. Nexium does not seem to be helping much, but how long does it take to heal before I will notice a difference? I don t take supplements, vitamins bother my stomach. Any ideas?