I've always had issues with fainting. Just last year, I passed out while driving, the hospital said that nothing was wrong other than my iron being low. doctors have always told me to take iron because of my levels being low. Then when I get blood work repeated, the levels are fine, the process repeats. I was referred to a hematologist. The hematologist said that everything looked fine. I immediately wanted to cry. S/N my mother and grandmother had polycythemia. Everything is so frustrating right now. They've left notes on my bloodwork saying that I have microcytosis, and that I could have thalassemia.