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You need to eat a substantive meal, or something that would be the equivalent amount of calories and glycemic load as a meal. You want to be getting something into your stomach quickly.
Then you should be monitoring your blood sugar closely over the next few hours. While monitoring your blood sugar, you can be preparing other foods for consumption that contain rapidly digested sugar, and this further intake can occur if you blood sugar starts to drop. Even if your blood sugar is in the normal range during the first hour or two after eating the meal, then further oral intake would be appropriate. If your blood sugar gets below 60 and you cannot get it back up quickly, then you will need to be seen.