Same thing happened to me. I was 6 points over the highest score you could get (146 ...out of 140 ><). So, like star_girl said, they will probably make you go for the longer 3 hour test. I went for it, and passed. I only had one abnormal number and you need at least two to be diagnosed with Gestational Diabetes.
Good luck with your test! Keep us posted!
They will probably just make you do the 3 hour glucose test. I didnt pass my 1 hour but i did pass my 3 hour hour. Im sure your fine, your doctor will tell you what he wants to do next.