Failed 1 Hour Glucose

I failed my 1 hour with a test result of 143 and the cutoff was 130. Going back Monday for the 3 hour and terrified I will fail and have gestational diabetes. I don't eat perfectly but I eat well. No soda, juice etc. hardly any pasta or bread. Definitely eat rice and cereal on a weekly basis. 1 square dark chocolate during work days. Right now I'm 25 weeks and have gained 7lbs. FTM and just worried and feeling guilty like I've done something wrong. How often do women fail the 1 hour and pass the 3 hour? Does anyone know if 143 is a bad fail?