Hey Jeff,
I had a similar thing while studying at Uni. Went out, drank to much, woke up the next morning pretty sick. Kept throwing up for about 16 hours with high sugars then realised I may not be hungover. Long story short it meant a night in A&E with DKA.
Do you have any symptoms apart from just high sugars? What are they at at the moment and what's your normal range?
EDIT: Just seen this is a type 2 post so may not be relevant but still happy to try and help