This all started around around the time I had a bad stomach bug and ha very loose bowel movements for over a week and felt apsalutely drained like never before then at the same time I started getting a slight pain under my left rib and a funny taste in my mouth which is hard to describe but il try it's like a furry slight burn metallic taste which can be tasted in mucus when I cough sometimes , I went to my GP and he gave me omeprazole which I took and didn't help I have noticedar that the taste comeso with the pain under my left rib I had one day the other week where I had no pain and no bad taste but that's about it as it seems to be with me everyday now any help would be much appreciated I'm 29 years old female if that helps thank you
Ask your doctor about gastritis.; an endoscopy can pick it up or your doctor can diagnose it based on your symptoms. Try eating bland foods and avoid anything rich, greasy or spicy. Try a food diary.
Are you still getting episodes of diarrhoea along with pain and does the pain move about your abdomen? If this happens, it may be IBS which can also cause an unpleasant taste in your mouth. My IBS started with an unpleasant flavour in my mouth. See your doctor again since omeprazole dodn’t help.