If this is something you are concerned about, I would urge you to talk to your parents and call your doctor
for an appointment. That is really the only way you will know for sure what is going on.
From the sounds of things, I think you could be dealing with hypoglycemia. This basically means that your blood sugar spikes dramatically (but maybe still within normal ranges) after eating a meal or snack high in sugar/carbs, but then falls lower then normal due to something abnormal going on with your insulin production... It is most likely causing all those unpleasant symptoms
I hope you do see your doctor soon. I think that's the best way to gain peace of mind . Please kep us updated
