Scared to fail glucose test

Hey ladies I’m in need of some reassurance. I’m 26 weeks and I’m going to go in for the glucose test in the morning. I know if you have gestational diabetes there is no way to trick the system. On the paper I got from my doctor it says that 20% of people fail the test while only 3% actually have diabetes, meaning they will have to take the three hour test and will pass. I’m terrified of having to take the three hour test because I NEED to eat within about 20 minutes of waking up or I throw up bile. I literally won’t be able to fast and then be in the car within throwing up, so I won’t be able to keep that drink down. Is there anyone who was scared to fail but then passed? Can you give some reassurance like what you ate that day. Thanks ladies!