<s>[INST] When I woke up Saturday morning and got a glass of water I got a sudden sharp pain in my mid chest after swallowing the water. Now anytime I drink anything I get this pain. I felt absolutely fine when I went to bed Friday night and was having no problems. [/INST] Thanks for your question on Chat Doctor. In my opinion we should get done ECG first to rule out cardiac cause. If this is normal than it must be related to HERD. HERD is Castro Esophageal Reflux Disease. It is due to laxity of the sphincter. So in this acid of the stomach tends to come up in the esophagus and cause the symptoms. So try to follow these.1. Avoid hot and spicy food.2. Avoid large meals, instead take small meals.3. Avoid stress and anxiety. 4. Take proton pump inhibitors. 5. Go for walk after meals.6. Keep 2-3 pillows under head in bed. </s>