Have small hh, constant chest pressure and sob when i lay down. ruled out heart do have reflux .im on ppi, can it still be caused by gerd and hernia?

Esophageal spasms?: Non cardiac related chest pain and pressure requires a thorough evaluation including upper endoscopy and often manometric studies of the esophagus. High amplitude esophageal spasms can cause severe chest pain and this is often confused with chest pain from a cardiac etiology. Since you cardiac work-up is normal, this should be investigated further by your gastroenterologist.