Sometimes if i eat a normal to large meal i hear my heart beat against my stomach (the sound you hear when you drink a lot of liquids, but heart beat)?

Pulsation after meal: What you are likely experiencing is a normal phenomenon called a "parasympathetic shunt." When you are digesting food, blood is directed to the intestines and you may actually be able to detect an abdominal pulsation. Another possibility is that, if your abdomen becomes distended after a large meal, the pulsation of a large blood vessel, the aorta, may be transmitted throughout the abdomen.