Hi Doctor, I have a ferritin level of 10 with fatigue, very poor muscle recovery, head aches, palpitations, head rushes, and Increased SOB with exercise... My serum iron, TIBC, UIBC, HBG, HCT, RBC, and vitamin B12 levels are all within or all limits. I am also hypothyroid (being treated), but have been having heavy menstrual bleeding for about 2 yrs and cycles are not regulated. Should I be concerned about about such a low ferritin level and should I correct it with oral supplements or IV iron?