Occasional Stabbing Pain In Chest, Lasts 15-30 Minutes--Stress Test And

Occasional stabbing pain in chest, lasts 15-30 minutes--Stress test and chest x-ray normal
upper abdominal pain-- constant (2-3 on pain meter)
Occasional lower abdominal pain
painful bowl movements (1-2 on pain meter)
Limited stool produced during bowel movements
Occasional bloating

All symptoms new in last 20 days

48 yr old male, non-smoker/occasional drinker/exercise regularly