I had a CBC done at my GP, and I have previously been diagnosed with Anemia. They said my red blood cell count was a little low, so I may want to do an iron supplement. But they didn't go into any more detail. What is considered "low"? Is there anything nutritionally that I could do to get this back to normal so I don't feel so tired and cold all of the time (I am currently taking 3-a-day wholefood vitamins)?