Has anyone experienced dizziness?

Hi Ladies,

Right now I feel as if I have been hit by a mack truck. I have been having a cycle since June. I am scheduled for March. I have back pain, bad cramps, and very heavy bleeding. I go every 2 weeks to get my blood drawn to check my iron levels and such. Well, in the last couple of days when I have went shopping or even cleaning my house I am getting dizzy. When I say dizzy it hits out of no where, if feel as if it would not take long for me to pass out. If I stop whatever I am doing for a few seconds it passes and I am good to go. I am worried as I have a 2 yr old at home with me all day by ourselves.
I am not sure if this is related to everything going on with my body or not. I go to the doctor Tuesday for a check up and I plan on bringing this new issue up to him. I was just wondering if anyone else has had this happen or am I going crazy.

Thanks for any and all responses.
I am starting to think the waiting is the worse.

I experience dizziness and vertigo-there is a difference and you should know, because your doc will ask you all kinds of questions. There are lots reasons for it, it could hormonal, low blood sugar, something with the the ears, food allergies, the list is endless! Hopefully your doc can figure it out it, good luck and feel free to find me around here after your appt if you have any questions.