Is it possible for pain in the stomach and/or intestines to cause referred pain in the shoulder? I know that diaphragm irritation can cause referred pain in the shoulder, but hadn't heard if other types of abdominal pain can. The pain in my shoulder gets sharper when I take a deep breath sometimes but not always. I am just trying to figure out if I injured my shoulder or if the pain is somehow connected to the fact that my stomach has hurt for the past few days.Thanks!!