How often are you supposed to monitor your glucose levels? When were you told to test? I failed my 1 hour glucose test and was sent to take the 3 hour. Unfortunately 45 minutes into the test I threw up the glucose drink. Instead of trying to drink that crap again I decided I would just monitor my sugar levels. I am waiting for my appointment with the diabetic clinic so in the mean time I decided to buy a glucose meter to watch my levels, but am not sure when I should be testing my bloods. Any advice is greatly appreciated. Thank you.