I had severe dizziness and nausea all the time. Those along with the "knot in the throat" feeling were the only symptoms I had. I got GERD from taking Advil at night and sleeping on my right side for more than a month due to an injury to my left side.
Try the DGL licorice (you can buy it in any health food store), take at least 3 (less than that did not work for me), dissolve in mouth slowly with saliva 20 minutes before you eat anything and at night. Don't drink anything while eating and don't drink anything at night after dissolving the DGL in your mouth.
Sleep only on your LEFT side (acid from your stomach cannot come up into your esophagus) and elevate your torso and head.
Try this for a few weeks, you will get positive results.
If you want more information on the DGL, there is tons of it on this site. Just research back. RandyDandy also has written extensively about his recovery. You will be happy you'll see. Good luck.