hi and thanks for the query,
Pain behind the breast bone could either be of digestive, lung, heart , bone or problems with the trachea. Considering the belching
and the history of steroids, this should be of digestive tract origin and is compatible with gastroesophagal reflux disease. It might be important to note any past history of upper abdominal pain
reflux or gastritis
in the past. Steroids impair gastric mucus secretion, lead to increased free gastric acid
, with increased of burning sensation in both the stomach and the esophagus
in the case of reflux. If the bone is tender, this could be a Reiters syndrome and could react on steroids.
I think gastrointestinal reflux disease be excluded formally, with an endoscopy/firboscopy. A chest x ray for a start could also be useful.
Thanks and kind regards.
Bain LE, MD.