Tired and out of shape??

Well, for some time now I have felt super tired, but have just attributed it to my busy life and four kids. I have also felt very out of shape--I've been getting winded easily and just wore out--even short of breath from very little physical activity. Well, today I figured out why. I'm not just sleep deprived and out of shape-- my Hgb is 8.5. So now it is on to testing and figuring it all out.