Thank you for writing.
Emotional stress generally does not cause a hiatal hernia. A hiatal hernia is a condition in which the upper part of the stomach moves up through a small opening in the diaphragm into the chest. The diaphragm is the muscular wall that separates the abdominal cavity from the chest cavity.
It sounds like you may also have GERD (heartburn). Most people with hiatal hernias have no symptoms.
Symptoms may occur when stomach acid moves up into the esophagus (swallowing tube). This is known as gastroesophageal reflux disease (GERD) and can cause:
Heartburn , especially after eating or lying down
Pain or discomfort in the stomach, chest, or esophagus
Throat irritation (frequent clearing of the throat)
Bleeding from the stomach or esophagus
Anon, while stress does not cause this, it can certainly make things worse. Discuss this when you see your doctor tomorrow.