Has anyone experienced pain in their sternum with acid reflux? I have gotten all the lung function tests done and they all came back normal . I have to go in for an asthma test in a week. I am currently under the care of a gastoenterologist and I was diagnosed with having costohondritis. The pain from my sternum has really been interfering with my daily life activities. I get so burnt out quickly and I can't even work out the way I did even 4 months ago. I am going to get an upper endoscopy done this week. This pain is awful. I take aleve and do heat packs for the pain.