What Causes Palpitations And Chest Pain While On Pantoprazole For GERD Treatment?

hi, i was hospitalized a month ago with complaints of abdominal pain, frequent burping, palpitations before burping,farting or defecating, i was constipated and i also have piles... physician performed proctosygmoidoscopy and normal findings found other than hemorrhoid... i was diagnosed to have dyspepsia secondary to GERD, intestinal dysmotility and hemorrhoid.. i was given daflon for piles, pantoprazole,domperidone, neurocare and carvidolol for my palpitations but my ecg and trndmill test was normal..meds were taken for 2 weeks.. but i experienced epigastric pain due to high fiber intake, inability to sleep and chest pains before farting, defecating or burping for 1 month.. while taking only pantoprazole.. now i am experiencing shortness of breath, chestpains,chest tightness, palpitations and sleep apnea... im so anxious about this symptoms what could this be...and how can this be managed?