Hi, Hopefully it will be gerd, because as Lenin said, the pain can be similar, but I noticed you said that it is worse in the morning. Gerd is worse for some people after lying down at night. Silent reflux can cause terrible pain, which goes down one/both arms and can mimic a heart attack (just look on the reflux forum) I don't have reflux, just severe chest pain. My doctor thinks it is digestion, because in my case the pain is constant and I feel as though I'm swallowing a tennis ball all the time. I think mine is stress because of my hubby having angina and a stent fitted recently