many things can cause that type of pain and you cannot make a diagnosis by one symptom alone. this is the location of your stomach and various stomach problems like gastritis or ulcers can cause pain. there is a large portion of your large intestine in this area so even trapped intestinal gas can cause pain but not constantly. the constant pain is the part that is most concerning. because of nerve pathways pain in the liver and gallbladder (location on upper right side under the ribs) as well as pain in the pancreas or spleen could be felt in this area. the causes are numerous. it is in your best interest to have a thorough diagnostic work-up including some special imaging tests to find that answer.
what could cause constant abdominal pain above the naval and below the rib cage in the center. . at times the pain radiates to back equally on both sides.