So last week I failed the 1 hour test and I took my 3 hour test yesterday. I had to fast for 12 hours for my 3 hour test. After an hour into it I started to feel very sick and hot. They took me back to lay on this chair reclined and gave me a bunch of ice packs. But I didn't finish because I puked after two hours. I only got my blood taken for the first hour so I'm going to have to do it again. Any advice on how to hold down the drink for 3 hours and not feel too sick? I really don't want it to happens again.