Good evening. I am a 38 year old African American female who was diagnosed with Iron deficiency anemia several years ago. I started having frequent bone pain two years ago. I started taking calcium and vitamin D shortly after turning 30. My bones hurt throughout my legs, my lower back, and occasionally my arms. I sometimes have rapid heartbeat, frequent headaches, and recently started having blurred vision, although my vision was reported to be 20/20 several months ago after a visit with my doctor. I frequently feel cold and sometimes I feel very hot and sweaty, as if I m having hot flashes. I am constantly tired and sometimes my body crashes even after getting 8 hours of sleep. What could possibly be the diagnosis?