Glucose test

So I know this is a question that is best for my ob. I see her on friday but I’m just being very impatient lol has anyone had their glucose test at 30 weeks? Ill be 26 weeks at this appt and last time she said we’ll schedule the test at this appt. I’ll be on vacation the week I am 28 weeks (but obviously I know If it’s best to do so, I’ll come back early so I can take it). Just looking for anyone who knows more about the timing for this test to get an idea of the answer I can expect 🤗