have you been checked for afib?
i have a thumping in my chest below my breast bone between my ribs no pain but very pornounced and not all the time. . i have a cold with a lot of mucus and coughing and hoarseness and have noticed this thumping just recently i am at the stages of clearing my cold but being 73 it is taking a considerable time to clear up. it feels like my heart is in the middle of my chest.