What kind of idiot decided 3 hours of fasting would work for pregnant women?

I failed my first blood glucose test, which means I may have gestational diabetes. But, the test has a high rate of false positives, so it means I get to come hang out at this clinic for 3 hours FASTING while they do a more in-depth blood glucose test. I have several issues with this:

Issue #1. The doctor said I could leave between my hourly blood draws. So, Corbyn and I showed up planning to do a little shopping between the pokes of the needle. But, apparently, we were misinformed - you can't leave because a lot of women faint, throw-up, etc. during this test. Also, you can't expend much energy because that could influence the results. So, instead of getting some needed errands done, I now just have to hang out and waste 3 hours of my life. (Luckily, my laptop goes with me where ever I go, so at least I can be doing something during these 3 hours.) - And poor Corbyn - he was trying to be a good, supportive husband and now got sucked in to 3 hours of wasted time. (He actually left and is going to come back to get me, but considering it takes 30 minutes each way to get here, he pretty much just wasted 2 hours of his morning.)

Issue #2: If you throw up, you have to start the test entirely over. WHAT???!!??? These doctors have spent the past 7 months telling me that I have to eat something at least every 2 hours so I can stop puking so much - and that didn't really work great (I still puke alot), but at least it helped stem the tide. Now they tell me I have to go 3 hours without eating, AND I can't puke. Um, OK. So, I am sitting here trying to not get nauseous (I have gotten really good at delaying the inevitable barf, so I am hoping I can make it), but this women next to me isn't making it any easier. She is also doing the 3 hour blood test and she is having a very hard time of it. She is breathing VERY hard, sweating, grunting, dry-heaving, etc... it would probably be comical if she didn't look/sound exactly how I am feeling.

Issue #3: 100 grams of sugar in the most disgusting drink ever. I can think of many, many more pleasant ways to down 100 grams of sugar than the disgusting, concentrated syrup they give you to drink. Give me a Twinkie or some Oreos... that would at least make one part of this ordeal enjoyable.

I mean really - is this the best technology modern medicine has been able to dream up?