It is possible you may have severe GERD. I have been having terrible breathing problems for the past few months. I put two and two together and figured it must be related to GERD because I feel like constantly something in my throat, fullness, & burning. I am having an endoscopy to confirm this in two weeks. I also asked my Gastro which I had my first appointment a few days ago. He said there is a definite connection between GERD & difficulty breathing. There are studies that show that GERD can bring on asthma and breathing problems. The lining of the lungs get so inflammed and especially at night while sleeping you dont realize but everything goes up and causes this. I was very relieved by my doctor to hear this, as I am so tired of this feeling of fluid in my lungs and difficulty breathing. Hope this helps.