This is the one hour test right? I guess you can do what they tell you. The substitute doc I got at the appt before told me that there is no need to fast. But apparently my OB wrote on the back of my form not to eat for 2 hours before the test, which I didn't read.
I ate a McD combo with a coke right before my test, because I read people said to eat something before so the sugar spike doesn't cause as much side effects. Anyway, apparently that was a BAAAAD idea. In hindsight it was stupid of me, but coke has always made me feel less nauseous and I already wasn't feeling so good that day.
I was severely nauseous for 4 days after even while I have continuously been on diclectin (had to take Gravol 3 of the 4 nights as it got so bad). I failed the test by a bit and found out I wasn't supposed to eat/drink a couple hours before the test when I was trying to talk my way out of taking the 3 hour glucose test.
I ended up just taking a fasting test without drinking the solution afterward. Still waiting for my result, but I would say eat your breakfast but not the OJ and do it a couple hours before the test.