Discomfort in upper abdomen which is very hard to explain. Not pain really, more like a heavy, uncomfortable feeling. Realized later on, it was probably bloating that I was experiencing. I lost weight because I was so anxious about not knowing what was wrong, and when I had episodes of discomfort/bloating, I stopped eating. My GP was diagnosed with the gold-standard test, Gastric Emptying. That was 2 years ago. I'll be happy to answer any questions. I felt very alone in my journey to self-help. There is no cure for GP and no explanation for mine. It's a "motility" issue possibly caused by damage to the Vagus nerve. Your stomach does not empty in a timely way, allowing food to sit and rot, and also resulting in early satiety. I recently joined a GP group that you may find helpful: Inspire.com Good Luck.