Blood sugar jumped to 400.... But I haven't eaten anything in 12 hours. Anyone else had this happen?

Last night my sugar was around 150 before I went to sleep. (Ate something 2 hours before)

I woke up this morning with it at 200. Strange but I heard of sugar rising through the night even without eating anything. I skipped breakfast and then another 2 hours later both of my meters have read 400. I have only been diabetic for a year and never had this happen before. The highest my sugar has gone in months was 220 so this is really blowing my mind.