Just joining the chat to share my experience with others. I am 21 weeks pregnant and was diagnosed with GD at 26 weeks. I knew I'd have it as I have other conditions that make me resistant to insulin. I didn't have it in my first pregnancy but my baby was almost 9lb, so, the jury is out on if I developed it later...
Anyway, I was managing to control it through diet but only just and to be honest it was depressing. The nurses were saying I should be able to have treats e.g. a couple of biscuits, half a chocolate bar, but there was no way I would be able to do that. I was eating very protein heavy, low carb food, minimal sugar, and even then I was only just keeping within range. And I hated everything I was eating!
I asked them to put me on tablets as although I could manage through diet, they said the tablets were safe through pregnancy, and if it meant I had a bit of flexibility to enjoy food a bit more then I would. I'm still being sensible, relatively low carb although more than before, having the odd treat but keeping it minimal. Currently I am having to work harder to keep my blood sugars up, but that is fine by me as my diet is less restricted.
I'm having growth scans every 2 weeks as bub was looking a bit small, but they think the measurements were out on the first growth scan as he's gone from the 9th centile to the 21st. I also didn't realise growth charts are personalised based on your own weight/height and previous pregnancies. So even if he stays on the 21st centile I'm still likely to have a 7lb - 8.5lb baby.
They have said they won't let me go past 39 weeks and will induce me just short of 39 weeks if I don't go in to labour on my own before that.
Personally I'd say if anyone reading this is finding the third trimester miserable because of very heavy diet restrictions, ask for the medication. I'd had a very stressful pregnancy, with complications all the way through, and the restricted diet for 3 months was probably going to finish off the remains of my sanity. I'm now feeling happy and relatively normal, and am grateful for the extra scans.