As Mr Silverberg has said, you've solved your own problem. Gas, bloating, upset stomaches.........all of these go hand in hand with anxiety. And if you're prone to hypochondria, this only makes it worse. Please do not start Googling stomach problems or you'll soon be back wondering if you have cancer! There is an excellent thread on here about this very issue..........I think it's on about page 3 or 4 by now, but I think you'll find a lot of information there and you will see, by the number of posts to that thread, that your problem is, indeed, very common.
I personally buy Rolaids by the truckload............BURP!!!!!! Oh, pardon me!
Peace
Greenlydia
Agree with Silver. If I'm having one of my bad days, just the gas I get from drinking a soda is enough to give me a very uncomfortable body feeling. Burping helps.
Anxiety can wreck havoc on your stomach on it's own, so it could just be plain old anxiety on it's own.
sounds like you answered your own question, could just be indigestion! Some of us with Anxiety and Panic seem to magnify the feelings we have in our bodies, I use to feel this same way and drank a 7 up (warm) straight down, got a really good relief (from burping) it was only indigestion.