I had a glucose tolerance test - the type where you drink 75 grams of the liquid, and blood was drawn before drinking, 1 hour after drinking and then again 2 hours after drinking it. I felt fine the whole time I was there for the test. I even felt fine up to an hour after I left the clinic. Three hours after I drank the liquid I had a bad reaction and felt like I was going to faint and was at the groccery store, and couldn't get out of there fast enough. I was very hot and sweating profusely, and almost fainted. I think maybe my blood sugar had crashed, or something. I ripped open a loaf of bread and quickly ate a piece. It made me feel slightly better, enough so that I was able to drive myself home. Does that mean that my blood sugar was too low, and is it indicative of having Type 2 diabetes, or what? Any answers would greatly help. I think that clinic I went to should have told me that this could have happened, and they should have offered me some juice or something to eat.