Am always feeling hungry even after a meal 30 minutes later my stomach growls why? trying to go on a diet keep getting embarrassed with stomach growling

Dysmotility ?: Consider gastroparesis=a slow-emptying stomach that is most symptomatic after the stomach fills from meals. Maybe its functional due to brainstem reflexes induced by eating--often exaggerated in ibs resulting in altered perception of gut distension, "growling", ; modified transit of food. Consider tachygastria, or gastric outlet delay reflecting inflammation, scarring, biliary disease, more.