I have had every test under the sun - hidascan, full
blood panel, h-pylori, ultrasound, stomach emptying, stomach CT, brain MRI, endoscopy, etc. Everything has come back normal and the gastroenterologist is ready to diagnose me with a stomach migraine. I get frequent bouts of severe nausea which can sometimes lead to dry-heaving, but never actual vomiting. Sometimes this can last for 5 minutes or as long as 2 hours. Also, the dry-heaving can relieve the nausea in some cases.