Hello, So I am 16 years old and I have been having this problem for as log as I can remember, but recently it has gotten quite bad. After every single meal, I will be fine for about 30-45 minutes before a sudden, intense wave of nausea hits and I will be running to the bathroom, believing I am going to vomit. I never do though. I just sit there for about 20-25 minutes, shivering and feeling awful, when suddenly the feeling just disappears. It stays gone for 5-10 minutes and then returns with a vengeance. This pattern goes on for about 2 or 3 hours. After an episode of whatever this is, I am completely drained of all energy, and typically fall asleep immediately. About 8 months ago, my doctor diagnosed me with Celiac Disease and said gluten was causing it. Well, since then I have gone completely gluten free, and it hasn't helped at all. I suffer for hours everyday and I just want this to stop. Does anyone know what this could be, or does it happen to anyone else? Thank you.