An immediate urge to use the bathroom after eating is often due to an exaggerated gastrocolic reflex, which is commonly associated with Irritable Bowel Syndrome (IBS) or food intolerances. Because proper treatment depends on the exact cause, I strongly advise consulting a doctor rather than self-medicating. A physician may recommend antispasmodic medications (like dicyclomine) to calm bowel spasms, or suggest probiotics and temporary antidiarrheals. For immediate relief, try eating smaller, more frequent meals and avoid potential triggers like greasy, spicy, caffeine, or dairy products. Please see a healthcare provider for a proper evaluation.