Failed Glucose

I failed my one hour glucose at 169. I was super careful about what I ate from breakfast and lunch. :/ so I do a 3 hour test next week. I'm super worried as I'm so skinny and only 114 lbs at 26 weeks. Making changing my diet and stuff really hard.

I read though that maybe I was being too careful and didn't eat enough prior in the day to the test so maybe I'm worried for nothing