Glucose testing

Catherine • First time mommy here, due with a sweet little boy named Ben on March 26, 2016.
So I did my glucose test today: the drink wasn't so bad like I thought it would be. But I'm confused about the cut off number? I was told it was 140, but then I saw somewhere else that it's 135. Well my number was 137. Please tell me they aren't going to make me go through a 3 hour long test?