3 hour Glucose test ?

I was told no water after taking my drink but my doctor had told me it was ok to have a few sips before hand am I going to fail my test now because of the water I drank earlier ?

Edit so I passed my 3hour they said Iā€™m border line with gestational diabetes so I have to take the test again at 35 weeks šŸ˜©šŸ˜©šŸ˜©