I am getting waves of pain just below my chest and just above my stomach. It feels a little like a clamp clamping down and squeezing, and lasts for a few seconds to a minute at a time. I have had kidney stones in the past, and it kind of feels like that pain, but instead of being on my side/back, this pain is right in the middle of the front of my body. Any ideas? I am 43 years old, 5' 6", approx 205 lbs, and don't have many medical issues, although I do take Omeprazole (sp?) for heartburn.