Curses Upon You, Blood Sugar Fairy!

Grrr... about an hour and a half later, and my BG is 108. I haven't been walking or doing other exercise, and can't think of a good reason for the spike or the drop. Now I wonder if it was a defective strip/meter or if my BG really *was* 27. Ghaaaa! I suppose I shouldn't stress about the occasional weird reading, but the stakes are so very high if I don't keep my sugar controlled.