I recently started comparing my blood levels because my lab tests showed that I was anemic. In December thru January I received the two shot Pfizer shots and by the end of March when I got my labs back, it showed that I was beginning to show low blood levels and I was diagnosed with anemia. Over the next 6 months, my blood levels have been going lower. I had no problems till I got the shots. There is definitely a relationship between the vaccines and anemia. I also have had some other problems which I now attribute to the vaccines.