There is a whole list of things that could be wrong.

Diabetes

Hypo/Hyperglycemic

Brain Tumor

Hysteria

Low Blood Pressure

Im really not trying to scare you at all.

Trust me im petrified of anything wrong with me.

If it continues just go see your doctor.

It doesnt really sound like anything.

Probably just in your head.

Better to be safe than sorry though.

This happens to me too.

I have gone to my doctor, and unless it happens right there, right then.. they really don't know what it is. I've had blood sugar done, I don't have diabetes, no high/low blood pressure...

I do, however, take med for my thyroid. But it still happens... all I do when it happens to me, is stop what I'm doing, take a few deep breaths and relax. The dizziness goes away, and I'm fine...

No, you're probably dehydrated (stop drinking caffeine and soda).