Why when i eat anything i have heartburn ?

Likely GERD: Burning pain after eating is most consistent with GERD/indigestion. It can be triggered by a number of different causes like acidic foods, eating late at night, regular use of certain medications (esp anti-inflammatories and certain antibiotics), alcohol, stress and even infection with a bacteria called Helicobacter pylori. If persistent symptoms > few weeks, recommend medical evaluation.

Decrease symptoms: Elevate head of bed, avoid tight clothes that cinch the abdomen, avoid meals late at night, wait at least 3 hrs after a meal to lie down, eat smaller meals, maintain a healthy body weight, avoid smoking, avoid alcohol, coffee, tea, caffeine & carbonated beverages. Try acupuncture, hypnosis, ginger tea, relaxation exercises. See if specific foods are triggers such as chocolate, corn, fried foods,