Very sharp/cramping pain in far upper rgt part of my abdomen usually after eating? I'm 33/m with a pacemaker for arythmias. No other medical probs

Gall bladder? Pain in that area after eating suggests a gastrointestinal cause, especially gall bladder. You need some x-rays and ultratrasound testing to pinpoint the problem. You are also pretty young to need a pacemaker but I doubt if that relates to your current complaint.