I have been recently diagnosed with a borderline case of GD --- My numbers sound similar to yours. I hope I can be of some help. I've been seeing a doctor who specializes in diabetes, and have talked to a nutritionist.
You probably already know that this is likely a temporary condition that will more than likely disappear once the baby is born, but you will get monitored after the baby arrives, and at least for the first year to make sure it doesn't end up turning into TypeII.
First of all, the numbers that are normal for regular people with diabetes (the ones you found on the ADA website), are actually too high if you are pregnant (according to my doctor). You have to look specifically for information on GD... Anyway, that said, your fasting number should be below 90 and one hour later, after you eat, it should be under 140. Regular diabetics measure after 2 hours, we have to measure after 1 hour...It gives a better indication of how well your body has processed the sugar.
It is true that the home devices are not perfect -- I have also measured my levels more than once in the morning and there is a range -- but, they do give a good estimate.
I would just stick to the first measurement and go from there, or you'll drive yourself crazy...
It is also typical that your fasting # is high -- That has to do with not only how your body is processing sugar in the night, but also your hormones. Your body is looking for the right balance and doesn't find it -- thus causing the high number in the morning and the fluxuations. That is very simply put. It also might have to do with what you ate the day or days before and at what time.
I am sure the nutritionist will give you a good idea of what to eat and when. A lot of it has to do with how you combine foods and how often you should be eating. There are some foods that you should avoid as well for the time being...Also make sure you are drinking at least 2 liters of water/day and getting at least 30 minutes of exercise in 3-5 times/week, which also helps to process the sugar better.
You'll probably be told to eat 5 small meals/day or 3 meals + 2 snacks - which is important to keep the sugar levels even throughout the day. Some foods are better when eaten between meals. Some foods that change quickly into sugars are best combined with fats to slow the process down...
The elevated fasting number is also my problem, but I have been able to get it under control with changes to my diet.
If after a week of dietary changes, the numbers don't come down to the normal range, then you might have to take Insulin. Again, this is something that would only be temporary...
At first, I had to measure my levels 6x/day...before and after each main meal. Now, I am down to 2x/day.
It is important to get the numbers in the normal range for someone who is pregnant, as the risk could be that you end up with too much amniotic fluid, the baby could get very big, you could go into preterm labor or the baby could be stillborn --
When I first started the changes to my diet, I actually lost weight the first 2 weeks -- but once I got the hang of things, I was back to normal...
Hopefully, I've been able to answer some of your questions.
Good luck to you! If I can be of any more help, don't hesitate to write again or PM me.
3 IVFs - all BFN // 1 DE-FET - BFP!
Anna born October 7th 2009!