It is normal to have fluctuations in your BGL. There are so many things that can effect your BGL, from how your overall health is to stress levels to probably how many minutes of REM sleep you have each night not to mention total hours of sleep and at which point in your sleep cycle that you wake up from that a 10 point variation is not out of the question.
Just keep an eye on it and if it continues to climb talk to your doctor, but the occasional small "burp" in numbers, such as you have mentioned, is not any reason to be overly concerned.
Post Edited (Jim1969) : 3/18/2011 11:19:33 AM (GMT-6)