<s>[INST] Hello - I have been experiencing discomfort similar to a lump under my right rib cage. It is not painful and when I press on it there is no indication of anything there. It feels as though it s pressing on the rib. This occurs mostly after eating. I do have acid reflux. Also sometimes when I cough, I will have pain in the middle of my abdomen and it feels like there s a knot or bulge there Could this be a hernia and are these two separate things. Thank you,f [/INST] HI. This can be a hernia as you have rightly noticed... The pain under the rib cage can be due to pulling in of some structures in the hernia. At the same time an acid reflux too can have varied symptoms... Please go for a clinical examination as this is important to find out the real cause. Supportive Ultrasonography and Endoscopy to confirm or rule out the other causes will lead to a definite diagnosis and treatment. </s>