trac, you will definitely feel tired light headed and generally off with high sugar levels. this is for a couple of reasons...one is that your kidneys are madly trying to flush all the excess out and all the extra weeing makes you a tad dehydrated.....plus when you dont have enough insulin to metabolise the sugar it cant get from the bloodstream to the muscle cells and other body cells where it is needed for energy...hence your blood sugar is high but your body cells may actually be quite low in sugar so you feel tired and lacking in energy.

your professor is prolly not conecerned as this is a common occurenec for diabetics and sometimes they forget that gestational D's are new to all this information.

but in any case what you are feeling is perfectly normal if your levels are out of whack...unfortunately the only real advice i can give is that you have to just ride with it and get lots of water - even more so than normal cos your kidneys will be flushing a lot out - and rest.

One of the back copies of diabetic living had some great chair exercises aimed at older people with type2 but would probably be ideal for your situation...i will try and find them and post back for you....

Have you looked at any of the low GI books for diet tips...don't want to reinvent the wheel if your DE has already covered this but low GI is the way to go at this stage...