There is no better time to discuss the correlation with anxiety and gastrointestinal symptoms than now. Anxiety can surface in all different forms on the body including the stomach. Did you know that according to Calm Clinic, anxiety is one of the most common causes of gastrointestinal discomfort? It can lead to stomach pain, nausea, gurgling in the stomach, heartburn and diarrhea. The reason for this is thought to be because anxiety causes changes in neurotransmitter function, particularly serotonin. For me, I like to use my medical terminology of a “wobbly” stomach when describing how I feel.