Did they test your B12 levels? it can mess you up just as much as low Vit D levels. Although low Vit D puts you at risk for a lot of serious disease so you best fix that asap. Check that B12... It can make you so tired that you can't sleep. Also you might have helicobacter or in the end it could be gluten. The tests are pretty random anyway. If you feel better without it then you are better without it.
We don't have GMO Corn in my country and it's still hard to digest.. That's just the nature of corn I'm afraid. I'm quite sure everyone with a leaky gut or hypersensitivity has built up enough problems that they will probably never fully recover to the point of being able to eat everything a more hardy person can. I was getting pretty over eating almost nothing and weighed only 55kg last year. Now I just take my mast cell stabilisers and antihistamines and get on with my life. So long as I take the mast cell stabiliser I can eat anything without any gut issues at all and my digestion is now perfect (and I've gained 11 kg over the last year). I figure at some point my gut will get thick enough that I can cure myself with weight gain lol. Life's much easier when you can eat Chocolate without getting sick
I still don't eat grains other than Rice but I could if I wanted to, well everything other than Gluten containing grains would be OK.
I ate a full block of chocolate 2 days ago just to see what would happen as it usually makes me sick. Didn't do anything. Not that I'm going to live a life of eating chocolate but good to know I can eat it without a problem
I got severe acne about the same day I became vegetarian. I'm not sure why but I guess I increased consumption of things my body didn't like. I persisted with it for 20 years but looking back I shouldn't have. Or at least done it in a much smarter way. Problem is it's a very difficult diet to do properly. The modern vegetarian invariable eats far more grains (soy, corn etc.) and more processed food that someone eating meat and that's the problem with it.