I remember that feeling. It will go away in time. I do believe it was related to stomach acid.
I was sleeved March of 2014. I am just now figuring out what my new feelings are and how they relate to hunger.
My emotional eating has began to sneak up on me. When my body is hungry I do have an overall "empty" feeling.
I am going to begin smarter meal planning and utilizing my fitbit. I am realizing that at this point for me it is about fat percentage loss and not getting caught up in what I weigh.