Unexplain-ed-ness

Whoa...what is going on? For the last 3 nights, I have been waking up at 2 to 230 am with a bloodsugar level between 275 and 350. Nothing has been different, nothing has really changed in my life. I have bumped my basal rate in the early am by 1 unit an hour, but HOLY COW!!!! WHAT GIVES?
IT SURE WOULD BE NICE TO SLEEP DURING THE NIGHT SOMETIME SOON. I HOPE IT SLACKS UP A LITTLE.
DO YOU EVER HAVE THE OUT OF THE BLUE HIGHS THAT YOU CAN'T TIE TO ANYTHING...?
LET ME KNOW YOUR THOUGHTS.