That's alright then, no increase over 2.0 mmol/l. You might want to go for bonebroth and coconut milk... If you're feeling rough, you're probably going through carb-flu (or keto flu). Your body adjust to less carbs, and it's really a bit of detox... And it feels like the flu. Achy muscles, headaches, weeing a lot... It'll last a little while, but it does mean that what you're doing is working. Carbs hold on to water, and as you're not eating those you're shedding water-weight. That's a good thing, but it does leave you a little dehydrated and low in electrolytes/salt. Hence the broth and coconut milk. It'll make you feel better. It's no fun, but this will pass and I promise you, it is worth it. I had more energy, less panic attacks, and beautiful bloodsugars on the other end. And no carb-cravings. Hang in there, don't give up!