A.F.
Raw Apple Cider Vinegar! The best brand I have found is Braggs. It has "the mother" in it, which is full of nutrients and good bacteria- it's the filmy stuff that you will see at the bottom of the bottle.
Also, raw honey works wonders for me when I have acid reflux.
Good luck! Acid reflux is horrible and I am sorry you have to deal with it.
Edit* I just read the other responses and want to say that Everly had a great suggestion in going to the chiropractor. It really does help relieve acid reflux!