just sending you some *hugs* and advice.
I tried the diet only at first dx but after a week of numbers not coming down enough, my OB put me on insulin. at first i was really pissed and upset about it, and felt like a failure.
but actually, insulin is a really great idea. GD is so specific to each person (some can eat this, some can't, there is no one size fits all diet) and by the time you can really figure out the diet, your pregnancy is over. it's honestly not worth the stress. so i am not sure if you are on insulin or not, but if not, and diet isn't working and it's too stressful, maybe considering going that route.
I don't really FEEL any different since starting the diet/insulin (over a month) but I think that's b/c I ate really well anyways, just not the right quantities/food pairing etc (ie i don't eat processed stuff, or eat out, etc)
So anyways, here is my short advice, and if you want to PM or email me, I'm so more than happy to help anyway I can.
First of all, always pair carbs and protein. Never, EVER eat carbs alone. It'll spike your blood sugar, Eating protein with it will help slow the absorption of carbs into blood sugar. I try to always eat at least half as much protein as carbs, if not more (Ie 30g of carbs with 15+g of protein)
I would be happy to give you a list of things I eat-I eat a lot of Kashi products, as they are VERY high in protein/lower carbs, and very filling. The only thing I don't like is their frozen meals, LOL. I drink their meal shakes, "granola" bars, pizza, crackers, etc. I find it easier to stick to a diet when I have prepackaged stuff with easily labeled carb/protein amounts.
Also the insulin is nice in another way, b/c I am not locked down and stressed out by ONLY my food choices controlling my insulin. I've had a few splurges (PIZZA, real, evil pizza, LMAO) and my blood sugar has stayed in range and under control. So it's nice to feel like I have a little freedom and leeway and I CAN have a little treat here and there.
HTH, and again, don't hesistate to email or pm me!