Though you are not convinced, hiatal hernia and GERD can cause dizziness, pain and tingling between shoulder blades
, feeling of heart pounding, and sharp pain
in left side of chest. Dizziness (lightheadedness) could be due to acid reflux. The reverse flow of contents of the stomach cause a series of neurochemical transmissions, which cause dizziness. It is also related to changing pressure in the cochlear canals of the ear during this process.