When laying on left side sometimes feel a heavy pressure that turns into pain in lower center chest - under sternum. Feels like a huge air bubble that wants to explode -- pain/pressure will wake me from sleep. The pressure/pain radiates up through the center of my chest and detours to the right side of my neck ending just behind my right ear. The pressure eases a few minutes after I change position. Is this indigestion? or could it be a precurser to a heart attack?
I am female and 52 years old.