Fasting blood sugar

Hi All, 

I am two weeks into Keto diet, I went in hard at 20g carbs and all though iv been pretty tired I am now coming through that. Lost around 5lb. My problem is today I have a blood sugar level of 115 !! I don’t understand stand this (I’m not diabetic) I thought blood sugar would be low? I don’t know if I am in Ketosis as I got the wrong monitor but now I’m worried I’m going diabetic! 

Can anyone help ? Is this normal? 

Thanks you