Acid reflux

Patient: Hi ,I have been suffering from acid reflux for past 4 to 5 days,i have been taking pantazol for 3 days now 20 mg,morning and night along with mucosta but still have immense chest pain which gets worse after eating and my throat burns when i eat anything.Also ,if i take a deep breath i feel pain in my chest.Swallowing too is very hard as i feel the burn and long will this chest pain last and i hope nothing serious,any foods to avoid,this is the first time i have had heartburn.