As I mentioned previously on this thread, I was convinced by my OB practice to do an early GD screening because of the "high risk" category of twin pregnancy. I took the 1-hour test (which is actually a screening, not a diagnostic test), failed it and took the 3-hour test. I passed the 3-hour test (none of my levels were elevated at all), as do 85% of the people who take it.
My new OB/Midwife practice was a little miffed that I had been through the screening too early, since they don't consider twins to be high risk for GD and the early test was not useful. So basically I have to do the 1-hour again now that I am actually approaching the third trimester. I am OK with doing the 1-hour screening, which doesn't involve fasting and is less sugar. Our new OB said her main concern with GD would be babies that are too big, and since I'm having twins, there's virtually no chance they will have the opportunity to get too big, so she didn't really seem concerned. It was a complete 180 from my previous care provider, who seemed anxious to hurry up and diagnose me with GD since I have twins and I'm overweight -- although GD does not necessarily correlate with those risk factors. So, whatever. Your Mileage May Vary wildly depending on your provider.
I already told the midwife that if I fail the 1-hour, I would rather just be diagnosed with GD than take the 3-hour test. She actually laughed! I was serious, though. That test was so shitty. She said to cut back on soda, cereal, white bread and refined flour - but I already don't eat any of that. She also said I should exercise every day, which, well, yeah, I should do that. I need to work on that.