I need some reurance about an aortic aneurysm.?

Should it be an aneurysm, you will have literally minutes to live, your stomach will start getting distended and discolored. Feeling your heart beat through your stomach isn't unusual in of itself, it could be your abdominal aorta is just really superficial. Also a CT scan would have identified the risk of a AAA (abdominal aortic aneurysm) it would have seen the weakened area of artery and you would have been in surgery. There are a large number of organs in your abdomen, it could be anything, but they have already ruled out a AAA, so relax.