My first symptom was chest pain and trouble breathing so I went to ER thinking it was a heart attack. They told me it was from acid reflux getting into the lungs. I was put on an inhaler and it helped relieve the pressure. I have to use my inhaler on occasion when I feel short of breath. I agree with Jaybay that you should see someone else if you're not happy. I found you really have to take your symptoms seriously and push for tests.
I am a transplant patient and my acid reflux has gotten worse with years of immunosuppresion meds. The " avoid" list is so long that there is nothing much that i can eat. Does anyone has any suggestions? I am already on the highest dose of nexium.
Not all docs or specialists are created equally. They're human just like you. Get another opinion. Are you seeing a GI Doc (gastroenterologist)?
In the meantime, try Prilosec OTC (over-the-counter) to treat the reflux symptoms. It's a proton pump inhibitor that is used to treat GERD (Gastro Esophogeal Reflux Disease). And yes, you are correct that GERD can cause shortness of breath and cardiac-type symptoms, usually from breathing in minute amounts of stomach reflux acids while you're asleep and unaware.
Also, try not to eat one blessed thing at least 3 hours before going to bed. Build up your pillows so that you are on a slight upward slant. Avoid caffeine and acid-producing foods like tomatoes and citrus fruits. Basically, you want to look at a very bland diet for a while trying to determine what works for you and what makes things worse.