Why do I poop right after I feel nauseous?

Feeling nauseous can trigger a response in the body that affects digestion and bowel movements. The gut-brain connection means that nausea can stimulate the digestive system, prompting a bowel movement as the body tries to expel whatever is causing the discomfort. Additionally, stress or anxiety associated with nausea may also lead to increased intestinal activity, resulting in a quick need to poop.