When do i test my blood?

Ma

I am so frustrated. I found out I had gestational diabetes on Sept 22nd. I was 28w2d. I was SUPPOSED to get a call from a diabetes specialist the following Monday and I've got nothing yet. I called 5 times throughout that week and left a vm nothing I got a little blood machine thing and started testing my blood, Sep 27 and I’ve been so confused when I test I’ve seen 1hr after a 1st bite of food and 2 hrs. Then I’ve seen 1 hr after a last bite of food, or 2hrs? I’ve been testing like 6 times a day because I don’t know what the hell I’m doing. It is so stressful. Please someone tell me what to do. My numbers have been fine except for when I ate a whole box of wheat thins (stress eating)🥲