Welcome back Jujubee. Yikes, your blood sugar is too high. Even with eating out, your blood sugar shouldn't be that high since you're taking your medication.
It was late last night when you posted, so I'm sorry you didn't get a response. Please call your doctor for advice. I think you need to be reevaluated for medications that you're taking. I don't know why it should be in the 300's to 400's at all. Food is the very first change that must be made. And then medications need to be adjusted - even changed if they can't help keep blood sugar under control if you're eating correctly. But of course, the food is the key.
This website has a lot of information about
blood sugar: www.phlaunt.com/diabetes/
Can you write what food you've been eating every day and what you ate out in the restaurant?