For the 3 hour test, you have to come in fasting. I stopped eating at about 8:30pm but didn't make it to the lab until 10:15am. This made my first fasting draw 10:30 and set me up for an 11:40, 12:40 and 1:40 draw. That's an obscene amount of time to go without eating when you're pregnant.
This time they gave me a choice between the orange Glucola or the Fruit Punch. I'd probably recommend the Fruit Punch but they're both gross, especially since I stopped drinking soda and other sugary drinks at least 4 years ago. The 3 hour drink is twice as sugary as the 1 hour, 100 grams of glucose instead of 50g, and man do you feel that extra glucose. If you can, try to get a cold bottle since it burns a lot going down when it's warm.
For me, the hardest parts were the beginning and the end. In the first 15 minutes after downing the drink I had a really tough time not throwing it up. I came really, really close and felt awful but the tech was watching me pretty close and kept telling me I'd have to come back and do the test over if I couldn't keep it down. That was enough incentive for me, I took shallow breaths, small sips of water and that sucker stayed down.
Three hours, three more blood draws and a bruised arm later, I was really not okay. Sweaty, clammy, shaky, a little dizzy when I stood up. I had E pick me up from the lab and immediately go for food where I practically inhaled bread, a Caesar salad, and half a Fettuccine Alfredo with chicken. My hands didn't stop shaking until about half way through the pasta and it took a few hours after for me to feel normal again.
