Hi, I ve been feeling fast palpitations in my throat. It could happens when I am just about to lay down, laying down, drinking cold water, sometimes doing just nothing, during or after workout. When it happens I experienced difficulty to breath and I start coughing. This is been happening for a few months now. I just turned 40 years old, I don t smoke, I exercise at least 5 times a week, my height is 5 5 and my weight is 122 pounds. Is this something that I should get checked?