I take 4 units of levemir at morning and before bed. For a number of days now I have been waking up with a bg level of over 10 even though before bedtime I have been 4/5. Last night however I was 13 before bed so I took my levemir and 2 corrective units of my novorapid but still woke up with a bg level of 10? Does anyone have any ideas why this is happening. My levemir dosage has been fine and controlled my levels overnight but somehow it's all over the place now?