Hi,
I understand that you are probably worried about these dizzy spells. Are you testing your actual blood sugar levels. If your blood sugar levels are normal that may indicate that there is something else going on. If they are either high or low then the symptoms may be related to your blood sugar levels. I suggest that you speak to a doctor as the symptoms may not be related to your blood sugar levels and if you are not testing you won't know.
You may want to buy a meter and test regularly to see what your blood sugar levels are doing but if you are having dizzy spells let your doctor know so they can decide your treatment. Good luck