Glucose test failed

I had no idea that I was supposed to fast for the 1 hour glucose test and my blood sugar levels were a bit high is what they told me today so I have to go back in on Monday and do the three hour glucose test before they tell me that I have it and set me up with appointments to handle it I am so worried about this its just been one big hurdle after another I hope she is healthy when she comes out has anyone had diabetes before when they were pregnant and what can I expect ? Thanks