Heartburn and acid reflux is actually how I know an anxiety episode is coming. It'll start with my stomach feeling weird, churning, or sharp chest pains and that sickening feeling of gas (vapor) coming up my throat. After that, the dizziness, tingling, numbness, whatever symptom anxiety has in store for me this time will occur. I've been to a GI dr. who did an endoscopy on me and said he only found a little reflux. I was like, "A little!?" it feels like my whole stomach is full of reflux. He even strongly recommended I stop all proton pump inhibitors, as I had been taking nexium daily. His other recommendation was a diet free of fatty and fried foods, and no carbonated drinks (which I had given up long before) I have to admit, stopping those meds did help. Watching my diet and avoiding foods that upset my stomach have made reflux an occasional issue, rather than constant.