Hi kariberi,
It does sound like hypoglycemia to me, possibly reactive (low blood sugar 2-3 hours after a carbohydrate meal) from the time and the symptoms you describe.
But as Dr Nikola said it could be a number of conditions. Explain all your symptoms to your doctor, the time of day, and what you have eaten/drank as you described above.
While you are waiting for further investigation you might want to avoid that coffee drink in the morning, and avoid sugar. Carry snacks with you incase you need something quickly.
In order to be diagnosed with hypoglycemia, your doctor will require a hypoglycemia blood sugar reading, usually from the lab rather than a home blood glucose monitor. Depending on what country you're in, this will be around 2.4mmol. If he suspects hypoglycemia he will investigate further to determine both the type of hypoglycemia, and the cause.
For more information pop over to the hypoglycemia forum. But try not to focus too hard on the condition until you are diagnosed.