I have stomach burning and back burn especially when i eat some carbohydrate foods like garri. please, what's likely the cause?

Discomfort in the upper midabdomen with associated back discomfort can be caused by a penetrating peptic ulcer of the stomach.or duodenum&also by pancreatic pathology. Gall bladder cause is less likely. See your physician or a gastroenterologist for evaluation & appropriate testing. In the meantime avoid spicy,oily,fried foods,alcohol,smoking,caffeine& take famotidine daily until you're examined