Have you seen a doctor? It sounds like movement in your intestines, which could be gas or worms or something else.
Do you mean you feel like a gurgling or something within your abdominal cavity? That sounds uncomfortable. I'd see your doctor. Excess gas hurts. That can cause that. If it is chronic, there could be something like malabsorption to look into. These things are treatable. When is the last time you've seen a doctor to discuss?