Do any of you get long-lasting upper back pain due to trapped gas or IBS? By long lasting I mean that can last days. I know lower back pain is common, but not many complain of middle or upper back. Gas was the only thing two different doctors found on ultrasounds, but I can't stop obsessing over pancreatic cancer, especially since it is often missed. Almost had this anxiety under control for two weeks but last night it crept back in my mind, keeping me up, worrying and googling until 5 a.m.