Pain felt at the upper left abdomen can be due to pancreatitis, an inflammation of pancreas.
This pain can be felt in the center of the abdomen, or can even radiate through to the back.
Sitting up and leaning forward may reduce pain, but coughing, vigorous movement, and deep breathing may accentuate it.
Usually persists for several days and is accompanied with nausea and vomiting.
The WBC count usually increases to 12,000 to 20,000/μL.
Ask for serum amylase and lipase tests and imaging techniques!
Best wishes!
Marija