Hi
Ive not been on here for a while. I started low carb beginning of February started really well on and off . last couple of months had not been good so I have started fasting.
Today my bg is 3.5 and my next one contour meter is red
Do you use medication for your diabetes? If not, 3.5 is fine, as long as you feel fine. It's red, because people on insulin/some glucose lowering tablets are in the danger zone with low numbers. On diet your liver will just spill some glucose in your blood before you get in trouble.
It is normal to get low glucose readings while fasting. But if we have been used to high readings, then it is quite a shock to the system especially our brain as it struggles to get enough fuel. It usually takes about 2 days for us to ramp up our ketone level to bridge the energy gap...