I know that stress can definitely affect sugar levels as it does mine as well.
Just the other morning at 4am I woke up sweating and anxious and shaking and lightheaded, and my sugars were down to 49!

That's toooooo low. Scared the heck out of me being so early in the morning and me sleeping. If I hadn't had those symptoms it could have been a real big problem for me.
And yes, I have been under a LOT of stress lately. I'm dealing pretty well with it but I tend to internalize a lot and it sneaks out in different physical ways. *sigh*
I'm glad you will check with your doc though.....better to rule things out as you go along.