Could be Mast Cell Activation Syndrome. The only way to find out, however, is a blood test called MRT (mediator release test), which is a food sensitivity test...not a food allergy test. Everyone has hundreds of mast cells which are the good guys, but sometimes they are not. Food sensitivities can trigger all kinds of pain, nausea, etc. I watched a video presented by Ilana Jacqueline. It was amazing. My grandson had been undiagnosed for 2+ years and had every possible test, including colonoscopy, ultrasounds, brain & abdominal MRI's, etc. Nausea, vomiting and severe abdominal pain for the last two years of high school. It was a nightmare. He also has type 1 diabetes since he was 10 months old. He is now 20. His MRT test showed many food & chemical issues, including turkey, corn, peppers, tyramine, capsaicin, polysorb 80, and aspartame. Growing up with diabetes, his parents gave him many artificially sweetened foods and beverages to eliminate high blood sugar levels, which contained aspartame! This product turns into formaldehyde when it warms up in your body! Anyway, as a result of this MRT test, he has discontinued drinking diet sodas and is watching consumption of any of his triggers. After only 2 days being off the diet sodas, his morning nausea, vomiting and abdominal pain ceased to exist! I know this sounds unbelievable, but after watching him suffer every day for over two years, I am a believer. Just hope this helps you. It may not be aspartame sensitivity for you, but this test may provide you with information that will help. It is an expensive test done by a company in Florida, but to us, it was worth it. Corn is in almost everything, so this one is hard to eliminate, but we do the best we can. Good luck. Doctors seem not to know about this test. We had to find it on our own research.