I don't get it , I feel like I don't have GD

Ok so, last week I took the glucose test and yesterday the nurse from my OB office called and said I didn't pass. I asked if there was another test I could then take cause I had heard from others that you can take a second test f you didn't pass the first time. The nurse then explained that there is no other test to take since my doctor had me automatically take the 3 hour test instead of the 1 hour test.

I also took a 3 hour test with my first pregnancy- y'all, I thought that's was normal for everyone haha

Anyways so I said oh ok, and they signed me up for going to the diabetes seminar to learn about everything. I was told I was really low and only 3 levels over the number. So I just have to monitor my food intake and prick my finger 4 times a day . BUT this is what I'm confused on... at the diabetes center today the dietician told me that the first time my blood was checked so basically "the first test" I was high and the second two times they checked my blood it was fine.

Soooo if my levels were fine the second two times then doesn't that mean I don't have GD!? I'm just trying to understand this