Dear Aurora
You could very well be right. I have had the same problems and I have a hiatal hernia. It is worse in the morning. But the other thing that could make you feel like that is a food sensitivity. You say you do not eat gluten or corn.
Do you eat dairy?
The way I can help further is for you to go to labtestingdirect.com(code watson for extra discount) and order the CSA Comprehensive Digestive Analysis and once you get the results I can help you further.
The other thing that comes to mind is Candida in the gut and the test will give us a great picture of what is going on in the gut. It is a great test and really a good way for you to get a baseline of what is going on. It will rule out a lot of things. Go to the website and read about it.
If it comes to you having a hernia 2 things could be helpful acupuncture and chiropractic both can help that problem.
Let me know how to help further
Brenda