I have been having the same problem. I went to the doctor after being very tired and easily out of breath. My CBC counts had all plummeted as well as my iron and iron saturation. I started pumping myself with anything I could with iron in it. Next blood test my CBC counts had come back up, but my iron and saturation levels were still low. I still am taking anything I can to up my iron. While I am not as tired as I was, I still find I have no get up and go, and still need one nap each day, which is not me. I plan on requesting another iron and saturation test soon, but am afraid this is permanent.
I received my two Pfizer shots in March and April.