Gestational diabetes

My doctor called today to let me know that I failed the 1 hr glucose screening. I spoke with her to let her know that I did not handle the test well and ended up passing out 45 min into it as a result of fasting and the amount of sugar. She advised me against doing the 3hr test and instead said that I should see a endocrinologist to review diet modifications and would have to test my blood on my own for a week.  My levels were very borderline, she said normal is 135 and I am at 147, so I may not have it, but was wondering if anyone else has dealt width this? My diet overall isn't terrible and I have gained less than 10 lbs in 26 weeks.  😕