So Annoyed with my numbers

My resting and before meals are all normal. But when I take my numbers after eating about 15-20 min there so high my numbers were 360 after dinner tonight and I ate a very healthy home cooked meal. I finally see my doctor tomorrow so I can talk to her about it -but this is crazy. Although I have not even spoken to them yet except on the phone since i was told I have GD so maybe I'm messing something up.