My sister had ulcers and a hernia, both went undiagnosed for years. Stress makes the acid reflux worse. She was doubled-up with pain and when it flared up again recently, she thought it was the ulcers back, but she had a type of endoscopy (think it's called gastroscopy??!) and turns out she has gall stones. She's having her gall bladder removed next week. Keep pushing your docs to diagnose you - see a specialist if you can - she did and thank goodness she did. She can't eat properly as it causes her extreme pain. She's lost loads of weight. Great for her, she says, but not recommended that way! Good luck.