Because I am over 30, my doctor had me go ahead and do my glucose test at 9 weeks. I failed the 1 hour one, and went back today for the three hour test. I ate a late dinner last night and nothing since then. About 30 minutes after drinking the glucose drink, I threw it ALL up. It was horrible. all they did was reschedule for the day after next. She said to eat some peanutbutter crackers at 10 or 11 and drink more water in the morning. What happens if I throw it all up again. I'm pretty sure it's gonna happen.