question: I had open heart surgery almost 10 months ago. Everything was okay until about 6 months after surgery. As for my heart, my cardiologist assured me that everything was okay. The symptoms that I shared with him were, very very tired. I could sleep all the time. I had a cough, that seemed to be worst in the morning but it could start anytime without any warning, occasionally night sweats, lost weight, from 190 to 160 and no appetite. He told me these symptoms had nothing to do with my medication or my heart. I had blood work and I am anemic. I was put on iron and vitamin D. What could be wrong with me? Thank you