try not to worry, im 32 weeks and my GP has decided to send me for a 2 hr test as well and also on the 3 day diet, as my first reading was 8.5 and over the course of a week bub gained 4 cms, she said it was nothing to overly worry about, as with the hr test you don't need to fast and there is so many factors that can give you false readings. The chances are that you will come back with a normal test result, and if your levels are still high, then the doctors will more then likely manage it by diet before any other intervention...