Low Blood Pressure Causes More Condition_symptoms How Can You Tell If You Have Low Blood Sugar?

How can you tell if you have low blood sugar? - low blood pressure causes more condition_symptoms

I went to the doctors because they have irregular intervals and took my blood. The results that says I have sugar in the blood, but said not to worry. However, if I had taken my blood for the second time, I have to say that sugar in the blood. How do I know? What are the symptoms and causes?