Stomach been hurting for 2 days because of ulcer, burning too. haven't had bowel movement since pain started. any link between ulcer/constipation?

Not eating?: Many people with ulcer pain have decreased appetite because of the pain on eating. They especially might avoid bulk foods that are high in fiber which would alleviate constipation. If you have an ulcer- you should be under a doctors care with medication that helps you feel better so you can eat. Stay away from alcohol, certain medications such as advil, ibuprofen, and caffeine products.