<s>[INST] Hi,  I have a pain in my stomach it feels like a fist gripping me inside or like the feeling after youve been punched in the stomach I just want to know if it could be something serious that I may need to have the light run down my throat and have checked out what do you think it could be? [/INST] Hi. Thanks for your query. You have a history of fist griping in the stomach or as if punched in the stomach. I do not think that passing the light down the throat (endoscopy you mean it seems) may be helpful if this is stomach volumes or duodenal problems. I would advise you to visit ER ASAP, get a simple X-ray of the abdomen in the standing position, ultrasonography to get an idea about the diagnosis and get further investigated like : Enterocolitis and so on and get treated accordingly. </s>