Hi and welcome Lyana!
We completely understand the rollercoaster. A few things that I know can impact are how long you take to eat the food, and when you start the clock for your 1 hr test. Plus eating the same thing at different times of the day can impact what your starting sugars were, so if you indulged in a sweet snack (as I have been doing this week) before you ate the pasta meal the second time, you might have been starting from a higher number, so the impact of the pasta was the same but your overall sugars were just higher. And of course the whole as pregnancy progresses your numbers will typically creep up naturally.
Fasting numbers are the first big thing they seem to look at. If those are routinely high, medication is indicated sooner rather than later for sure, but it isn't really a bad thing. I'm still diet controlled because my fasting numbers are always normal, but sometimes I think I'd be better off this time around on medication because I'm having much more trouble being disciplined in my diet!
As an update on my ping-ponging yo-yo numbers, yesterday I had some lows, which is odd because I am not medicated. They weren't scary lows, just low 70s when I would typically be expecting 90s. So I got kind of cranky/feeling off like I used to when I would have hypoglycemic issues previous to pregnancy (low blood sugar), checked, and sure enough was a bit low. So... I completely failed at following the wonderful advice to eat a *SMALL* amount of carb. Every day this week in the afternoon I've just HAD TO HAVE a sugary treat. Cupcakes twice, once w/ icecream and once with an extra cookie. My numbers were actually completely fine for the day for both of those days. Yesterday I went completely over the top. After my lunch my numbers were still below 100, and they were dropping a bit, and... I indulged my sweet tooth. I drank a bottle of chocolate milk, ate one of those fried cherry pie/empanada thingies, and then finished off over half a pint of Ben & JErry's Cherry Garcia icecream. Well, that blew it for me, although STILL not the worst number I have had, I tested an hour later and I was at 152. I ended up basically skipping dinner and considering that my dinner. As a mom, I would be so angry if any of my kids ate like this! But I just can't seem to stop myself.
I really expected that I'd have my act together this time, since I already knew what to expect with GD and since I'd been doing quite a bit of cooking and nutrition balancing for my family before I got pregnant, but I think I've gone a little brain dead on that front right now.