How stress or tension affect digestion? i get indigestion from stress and feel bloated and nausea.

Opposites: The "fight or flight" response prepares us for battle--and shuts down the "feed or breed" side of the balance--which is why stressed people often feel nauseous and/or throw up. Bloating is vague & can be from air swallowing (/anxiety) or other related causes. Biofeedback / cognitive-behavioral therapy can help. Look online or ask your dr.