Hello dear, The symptoms as mentioned in your post is attributed to Acid Peptic Disease. It is caused due to erosion of gastric/ duodenal mucosa secondary to increased acid production in the stomach, which can be a prolonged side effect of drinking all out mosquito liquid. Investigation like Ultrasound scan of Abdomen & Upper GI endoscopy will be helpful in determining the location & severity of the ulcers. Symptomatic relief can be obtained with intake of Pantoprazole preparation (to be taken twice a day before meals) & antacid gel (to be taken after meals). They prevent formation of excess acid in the stomach & provide symptomatic relief. And it is also needed that you take certain precautions regarding your diet & lifestyle, such as: 1. Take soft, plain, non-spicy foods 2. Drink lots of water to maintain adequate hydration 3. Avoid fast foods & gas producing food products like cabbage, etc. 4. Avoid smoking & alcohol. 5. Keep away stress, think positive. So, kindly consult a Gastroenterologist for proper clinical examination. There is no need to worry, you will be fine. Wishing a good health. Take care.