Simply rejecting carbohydrates

Unlike many here, keto isn't something I do for weight loss. I'm in a weird position where I just seem to absolutely reject any carbohydrates that I consume. I got a bunch of blood tests including stuff like blood sugar which all came back normal aside from the one used for gluten sensitivity which came back as a strong indicator of celiac, so at first I thought it was just gluten I was rejecting. However no, it's pretty much all carbohydrates.

I'll get mad rushes and dumps of energy after even the smallest amounts, twitches, weird aches, the whole lot. So I'm forced into keto and I don't always stick to it but each time I do my symptoms seem to settle. It's just annoying because it's often more expensive. Anyone in a similar boat to this?