Usually great digestion. But I notice that after stress/anxiety, for 1 mo. Start burping alot, feel reflux, burning pit of stomach, feel gas move.?

Anxiety and GI. Digestive symptoms are common w/anxiety and stress. The gut is often called "the second brain." Please see your doctor to rule out any medical conditions and if this continues a clinical psychologist can help w/stress management. Peace and good health.