No idea what it is, but it's most likely not pancreatitis. That's a very very painful disease, and you'd be at the ER no matter what getting opiates if you had that, again most likely. I assume when you say you stopped eating carbs, you meant stopped eating white flour. Whole grains are the staple of a healthy diet, and all the most healthful foods are carbs, such as veggies, fruits, etc.