Hey Maria, I'm six weeks post now, and I am also having chronic burping and heartburn on and off. The burping is worsened by an empty stomach and by anxiety. For the heartburn and throat inflammation I recommend a bit of Gaviscon followed by brushing teeth with baking soda toothpaste. That seems to hold off the burn for a little while. I also like chewable antacids that coat the throat, like Gaviscon chewable or Rennie Deflatine.
I am holding off on worrying about it right now, just trying to manage the symptoms is job enough, and I know from what so many have said that its really early days yet. But it is hard, and upsetting when we have been through surgery to not feel any better yet. (I actually feel far worse, as for some reason, nearly all my symptoms resolved themselves in the month running up to the op...I almost cancelled!) hang in there. I'm glad there are others feeling as I do, I feel less alone...wishing for better days to come for both of us!