I had severe PA when they finally found mine. Have they checked you for Gastritis or Gastroparesis? I ask because they treated me for IBS at first and FODMAP did not work at all for me. Later they found I had both the above instead. Only because there were a lot of things on FODMAP that I could not digest and break down. When they thought I had only IBS I was told to do FODMAP and eliminate one food at a time and keep a good diary. A great nutritionist is key to helping make a diet just for you! I have heard wonderful outcomes from that diet! Best of luck.