Incessant Burping

Hey all. I (22M) have had acid reflux for almost a decade, and have been on Nexium daily for nearly as long. Recently, i.e. a few months ago, I developed almost nonstop belching. Sometimes this is accompanied by regurgitation of food into the back of my throat, such that I nearly throw up (and have before on multiple occasions). I thought that if I waited it would go away, but I am now burping multiple times a minute, almost all day long, regardless of food triggers (though carbonation certainly makes it worse.) I am also constantly feeling full of air. Would love to hear if any other folks have dealt with this?