Belching is constant for 3 days possibly associated with prolonged stress, what is wrong?

You many have : Already identified the cause: stress. (it is not the only reason for ^'ed burping). What are you doing to manage or v your stress levels? O address stress: talk about feelings ; address problems. Don't avoid them. Aim for 7.5 - 8 hours of sleep/ night. Daily physical activity is optimal in a green space. Eat healthfully. Cut out junk carbs, caffeine ; alcohol (or moderate). Try qi gong, tai chi.