@RandomCatGenerator Hi there. Congratulations on your pregnancy. It's such an exciting time!
Try not to worry. I know it's overwhelming to find out you have GD and you're brain goes into overdrive - I was the same.
The advice above is sound. The best advice IMO is always pairing carbs with protein and fat. Like pp has said, you should avoid low fat food items like the plague.
I managed my GD through diet and also Metformin. I was used to taking Metformin as I have PCOS. If you do need it, you may feel a bit sick at the start but it eases off (ask for slow release as you have less sicky feelings with it). You may be able to control through diet alone though.
I typically had one slice granary toast with smooth low sugar peanut butter for breakfast. If I was still hungry, I waited an hour or two then had another. For me, the key was spacing out meals as it gives time for your blood sugar to keep steady. It also helped me massively when I was hungry to know I could eat again in an hour or two! I drank a lot of water as I was thirsty all the time.
For lunch, I might have had lasagne with salad and full fat coleslaw or a cheese and tomato toast or with salad and coleslaw or one since granary toasted with two poached eggs.
Diner, I could tolerate small portion of potato with some form of meat and veg. Surprisingly, a chippy fish with a handful of chips was also fine so I had occasional treats! Also, if I was out and about and needed to eat on the go, I could tolerate chicken strips from McDonalds but no fries.
Evening time I would have had some full fat Greek yoghurt with blueberries or a few strawberries cut up. I also crumbled a rich tea biscuit into the yoghurt from time to time.
Lastly, I'm surprised I didn't turn into a cashew nut because I ate a lot of those (and the nature valley protein bars were also handy to keep in my handbag).
My pregnancy was absolutely fine and baby born healthy and I actually lost weight overall. My bloods were also fine after he was born but I still have to take Metformin for my PCOS.
It's been the only time in my life I've stuck to a "diet" because of how important it was (this was my second pregnancy at age 41, but first viable pregnancy and we had tried for years to get pregnant).
There is a really helpful FB group you can join for support and handy recipes and food ideas (I think it's called Gestational Diabetes UK, or something very similar).
You got this!