Frustrated...

So I failed my 1 hour test by 3 points, went for the dreaded 3 hour test, and failed 2/4 draws. The first and last were totally fine, but the 2nd and 3rd, I failed by 5 and 7 points. I really thought that the doctor would let me retest for something so small, but he called yesterday to tell me they are diagnosing me with GD with no further testing. I have an appointment with the endocrinologist in 5 days to see what's next. I'm nervous to start this journey! I'm trying to decide if I should be more insistent on getting retested or just take the diagnosis and move on. I'm very torn! Any advice from anyone who has been through this? Thank you in advance!