PJess, I had the exact same problem going on. When they did the manometry it was discovered I had a 3rd unproductive movement in my esophagus (normal esophagus has two movements) and an irregular Z-line causing a rather large hernia and poorly functioning spinctor. A loose wrap helped me.
Be sure to have everyone of these tests:
PS. I'm a first grade teacher so I know how valuable your voice is to you.