I drank gatorade before a blood test and the doctors came back and said i had high blood sugar could the gatorade have caused this

Unlikely: It's very unlikely that drinking even a lot of Gatorade will cause a high blood sugar since it doesn't contain very much sugar. In fact, you'd have to drink 75-100g sugar (http://www.mayoclinic.org/tests-procedures/glucose-tolerance-test/basics/what-you-can-expect/prc-20014814) then get tested for 1-3hrs. Better yet, since you're 16yo, ask your parent(s)/guardian to take you to your FamilyDoc/Pedi