Hello, AAAA, Thanks for contacting HCM with your question. You describe your pain as constant and dull and always in the same location beneath your right ribs. There is the liver and gallbladder. There is the covering of the lower part of the lung , the pleura. Then there are nerves in the groove of the ribs. Any of these , if inflamed, can give you that kind of pain. Trapped gas in general can be relieved by changing position and is usually not constant. You need to get a sonogram of the liver and gallbladder to rule out gallstones. Get a chest x-ray to see if ther is any fluid in the right lung lower part. Get a complete blood count to see if there are signs of infection. If all negative , you can try taking some anti-inflammatory over the counter medication like Ibuprofen or Naproxen as per directions with food for 4-5 days and see if it improves. Wish you well.