Hello friend. Have you tried take papaya enzymes? I have been fighting with this same issue with the breathing problems. It gets pretty bad sometimes feels like I’m going to die. I take Xanax when it gets really bad to calm me down. But I noticed taking papaya enzymes for inflammation has been helping. I know GERD causes acid gas like fumes to get into the lungs and then it causes shortness of breath. The papaya hasn’t taken it away completely but it does work. I used to take the chewable ones but they taste awful to me. So I went on Amazon and got the capsule form and they’re much better. They might work better if I took them daily. It might be acid reflux causing your issues too. Or GERD. I know it’s frustrating trying to figure this all out. I’ve been suffering for years. But out of everything I’ve tried the papaya enzymes seem to work best for me. Sometimes eating too much sugar will cause inflammation and then the breathing problems start or sometimes milk does it. Or sometimes nothing causes it. It’s so weird. Some foods cause it to act up. I hope this helps.