14 years old and after i eat i get stomach pain also constipation ever since i had the stomsch flu last week (5days)?

Gastroenteritis: If you had a lot of diarrhea, it is not unusual to go a few days without a bowel movement until your intestinal tract normalizes. Cramping may be due to residual irritability of the intestinal tract as well. See your physician if symptoms persist or worsen. Until then,eat a bland diet and avoid very harsh roughage. Taking mylanta 1/2 hour after meals prevents gas build-up. Avoid very cold beverage