Gestational diabetes

Emily • 22. Married. Have one angel baby (1/19/14) and a baby boy (12/4/14)
Well ladies, I failed my regular glucose test and the 3 hour glucose test. My number was supposed to be under 120 and it was 174. I am not overweight nor do I eat unhealthy. Diabetes run in my mom's side of the family, so it may just be hereditary. They set me up with an appointment at the diabetes center for next week so I'll have more info then. They also tested me to see if I possibly had diabetes before I was pregnant. I don't really understand how that test works. For now, I have to start pricking my finger to check my sugar 4x daily and recording it. Does anyone have any advice?