I am having pain in my stomach always. Last 3 months back I did usg whole abdomen and 3 mm kidney stone was found. I consulted urologist they said it's ok drink more water. I am taking berberis vulgaris homeopathy medicine since last 3 months but pain is always there. Now problem is I also have gastric problem. whenever I eat outside my stomach gets upset. Also 20 years back I was detected duodenal ulcer. Now I am not able to understand what to do. After having pain recently in the evening fever also comes. Please suggest.