Hi and thanks for the query, With a normal hemoglobin level and continues fatigue, another cause of fatigue should be sought. It would interesting to eliminate particular causes of the anemia, because the underlying condition could explain the fatigue. Common causes usually include chronic infectious process, inflammatory diseases and myeloproliferative/bone marrow disorders. Characterizing the various types of anemia you had could also be an important clue point in getting the right diagnoses of this fatigue. Chronic fatigue syndrome requires exclusion of rhumatologic conditions to be made. Consulting an internist first could be a big step for a proper clinical evaluation and appropriate diagnostic and management plan. Thanks and best regards, Luchuo, MD.