I am having a first time and weird behaviour from my body. It feels like something is stuck in my throat and the problem rises when I lay down for hours in the night for sleep. I woke up in the mid night with the heartburn and increased heart rate then after walking for some time, my heart beat comes to normal. Please help me to find it out what is the issue. I had feeling the problem of acidity from the last year also. Is that becuase of acid reflux or something else. Kindly help me out. Thanks in advance.