Likely fm esophagus
Pain localized near the area beneath the breast bone generally reflects irritation to the esophagus(swallowing tube) as it enters the stomach.
Stomach acid can push up the esophagus & leave behind a sunburn
like change to the tissue & cause pain with feeding
. Cafeine, sodas, chocolote, acidic foods&eating close to bedtime all can aggrivate the process. Disc with your dr as diet
chg or meds can help.