<s>[INST] I have a sharp pain in my stomach right near my right rib cage. It came on suddenly. & I dont know if I need to go to the Dr. Also Ive had a bad cough since December 2nd and a strange bruse appeared yesterday morning on my chest & it has a strange lil bump under the bruse. [/INST] Hi. Since you have cough and pain, the possibility goes in favor of plural inflammation. It gives sharp pains. The bruise and the lump may or may not be related. The possibility can be due to strained rib muscles due to act of coughing. I would advise such a patient for X-ray of the abdomen in PA and right lateral position to confirm or rule out. You need to visit a Doctor for a clinical examination and investigations and treatment. </s>