Dizzy on period?

Last night,I thought I was going to pass out.Everything was spinning and Everytime I stood up,I couldnt see straight,and I kept bumping into the wall as I walked down the hall.
I layed down to go to sleep and I was so dizzy that I felt almost sick to my...

stomach,and It felt like I was spinning.

My period is much lighter than other times,and I don;t understand why Im so dizzy.Im not usually.

Have your Iron checked!!!

when you feel dizzy sit down with your head between your knees and close your eyes and breath normal. This will help. This dizziness could mean that you were hypoglycemic. Carry a few candies or granola bars with you for an instant energy boost. It could also be that you are dehydrated. Gatorade will be your best bet because it contains liquid as well as the electrolytes to give you energy.