My Son Is 26 Years Old With A Stomachache In

My son is 26 years old with a stomachache in the pit of stomach and diarrhea. He says the pain he feels is "tight." No temperature and BP is 133/82. Last BP @ check-up was 101/66. Weight: 240. Ht.:5'81/2. Breakfast: Buttered bagel & Snapple; Lunch: "A lot of chicken wings about 16"(Mild Hot sauce) with Mango Ice Tea. Dinner: Salad, Baked chicken, Baked Potato and Water. He said the pain level was a "10" 2hrs. ago and now is about 7-8 after drinking peppermint tea and charcoal capsules.