I always have to chime in on GD conversations, lol. I had GD with my first pregnancy. I was 25, had a BMI of 18, weighed all of 95 lbs at 5' 2" prior to the pregnancy, and NO family history or symptoms. And I had raging gestational diabetes. We were barely able to treat it with diet and exercise. There is more risk beyond a large baby ... baby's kidneys can be damaged if there is untreated GD, as can other vital organs. My daughter was born hypoglycemic and required treatment at birth. I also required a glucose drip during delivery or I may have had additional complications from my blood sugars crashing while in L&D.
My present OB (I am on my third pregnancy) stated that she feels my particular case of GD was caused by hyperemesis and the unstable blood sugars that came from being unable to eat regular meals and the other issues presented by constant vomiting/dehydration. I believe she is right. My second pregnancy the HG was better controlled, and I did NOT develop diabetes.
Totally not saying this to frighten anyone, but just as a cautionary tale. I completely get just how much the GTT test sucks - I had to have it every six weeks second preg and usually puked in the lab only to return the next day, and the next day after to try again. The lab did offer me other options (FOODMENT jelly beans and coke, namely END FOODMENT) and that helped a little. Your other option is to get a monitor and do some random draws at home and chart your readings. But GD can be very serious.
((Hugs)) to those of you going through the test and good luck.
3rd time HGer
HG Baby 1 born 10.31.04, in the States - treated with Reglan, which resulted in dystonic reaction, and IVs. Developed GDM, as well.
HG Baby 2 born 9.3.07 in Australia - Zofran, weekly IVs, misc other meds, no GDM.
HG Baby 3 due September 2012 - HG treated with Zofran primarily. 8lb weight loss so far.