Your symptoms are due to Duodenitis which is commonly due to H.pylori, but not in your case, neither due to low magnesium and potasium. Yours may be due to acid reflux
. You are taking omeprazole 20mg and then 40 mg without any relief. You can try changing to other Proton-pump inhibitors (PPIs) Pantoprazole
, Ilaprazole . It may be taken in the morning and evening empty stomach with cold water. Prokinetic drugs like Metoclopramide
taken in 3-4 divided dose before taking food will help to reduce fullnees and burping. Chlordiapoxide alone or in combination with Clinidium bromide is also helpful taken 2-3 times bfore food. Ingestion of Nonsteroidal antiinflammatory analgesic, spicy oily foods, smoking and chewing tobacco and its preparations, consumption of alcohol and junk foods to be avoided.