I'm 32 weeks and tested my blood glucose this morning. Fasting was 108 (I tested at 6:15 am and had last eaten around 6 pm the prior evening) and 2 hr after 50 grams of sugar was 97. Is it likely my fasting was high because it was so long in between meals? Should I eat a bedtime snack and retest tomorrow am?
My fasting numbers stink... often over 100 these days. Pregnant, non-pregnant, that fasting number is my bad one. After meals my numbers are FINE. Marvelous. Almost too low unless I really had a ridiculous amount of carbs. (The GD screen is a ridiculous amount of carbs, in my opinion, and I barely passed this last time... have to retest in a few weeks.)
Some theories on high fasting numbers:
That is reflects a middle of the night LOW, that your body overcompensates for by releasing sugar from it's storage spot in the liver. If you wake up around 2 or 3 am, test your blood sugar. If it's low, you'll know you probably need to start having a middle of the night snack. If it's high, it doesn't prove anything... it could have been the jolt of sugar from your liver that woke you up.
Some people find that if they lower their carb intake throughout the day, they wake up with better fasting sugars.
Some people find they are sensitive to particular kinds of carbs, like the sugars in milk or grains, and have to severely cut back or eliminate them.
Other people find they'd rather just take insulin at night and not worry about it further.
I've been supplementing with chromium picolinate, and initially it helped my fasting numbers a LOT, but as my pregnancy progresses (22 weeks now), my numbers are creeping up again.