Glucose test😡

I failed my one hour test big and bad!! I got a 188!!!!!!!! They said I could either fast or eat something smaller but not a lot of carbs, I ended up just fasting cuz I didn't know what I was hungry for when I woke up... Then I failed!! Ugh, now onto the 3 HR test next week.
Anyone fail this bad and pass the next? Anyone who has GD, what do I possibly have to look forward to as far as what I should or should not be eating?
I thought I was healthy and eating fairly well (I'm not a saint) but ultimately I guess not doing good enough.