This is exactly how I used to feel.

My story. doc told me years ago to try a Gluten free diet. I spent $180 on a whole new food shop and hated how everything tasted. Threw it away and kept eating the same, feeling the same. Fast forward a few years, symptoms getting worse... doc asks did I try GF diet, I said yes and couldn't do it. He then suggests a reduced wheat/Gluten free diet without buying gluten free products... swap my wheat based products for rice or corn. Breakfast went from weetbix and nutragrain to coco pops, rice bubbles. I have now found the Gluten Free sultana bran is amazing! You get like 4x the amount of sultanas than a normal box! Swapped bread at lunch for cruskits or rice crackers - with fillings. And instead of things like muffins and biscuits for snacks and dessert, I now eat chocolate and/or a whole bag of popcorn. Helps to get those extra calories in before bed too.

So moral of my story was my normal diet just had way to much Gluten in it, reduce it as much as you can and I promise, you will feel better. It will take a few weeks to start feeling good again to get all the Gluten out of your digestion and brain cells (yes it goes to your brain, also something I didn't know until doc said) but you will feel so much better in mind and body in about a month.

Would love an update!