If you get the impression that something is moving in your stomach, it is possible that you are experiencing phantom kicks, a hidden pregnancy, or that your ovulation cycle is causing a false sensation. There are a number of other conditions that might be to blame, such as digestion, indigestion, muscular spasms, allergic reactions, intestinal blockage, or diverticulitis.
Digestion. When you eat, the muscles in your digestive system begin to move, which allows food to move from your stomach into your intestines and on to the next stage of digestion. You could feel the movement of these muscles soon after you eat, or you might not feel it until a few hours later.