I have had gas or air on my stomach which when it occurs, feels at first like it is escaping through a tight opening (about the location of the bottom of my breast bone). As it slowly moves up ny throat, to eventually become a burp, my heart pauses. There seems to be a tenseness in the all the way up my throat until a burp occurs. Sitting will cause the this to occur. Standing not so much. The heart hesitation causing a mild discomfort along my forehead and I guess I would call a tingling on my lips. I have tried Zantax, but this doesn't work. I am currently on a 14 day Nexum program. (over the counter- 6 days so far). This has helped a little but still. OK. When I walk up first thing in the morning, there are no symptoms. As long as I am upright, things are much better. Don't like the way this makes me feel. Just curious as to what might be going on and why my heart beat is being affected. Thanks!