Glucose testing

So turns out I failed my hour glucose testing😟! I'm so shocked, sad & discouraged. I very very rarely eat junk food, Iv always been a healthy person and I walk (about all I can do at 29 weeks) 5 times A week. No one in my family is diabetic a though that doesn't matter. But it just makes me scared now that I might have gotten in with this pregnancy. I go for my 3 hour testing this Thursday and I'm dreading the 3 hour wait in the waiting room. I'm dreading not beig able to eat lol and what the hell im going to do for 3 hours. Any one else have any suggestions or stories of what they did to keep busy or encouragement for me?