<s>[INST] i have been sick for about 9months, im a 16 year old girl who was healthy until the day i donated blood...my symptoms consist of :very extreme tired, weak, dizzy, pale, or short of breath,Easy bleeding or bruising, fever, very bad joint and bone pain, bad lower back and neck, dazing out, throwing up, trouble breathing, headache, my eyes and head get very heavy ad pressured where it hurts to open them, and the doctors i went to said my red blood count is low. do you think it could be leukemia ? [/INST] Hi, dairy have gone through your question. I can understand your concern. Low red blood cell count means anemia.  It's not leukemia.  Your symptoms are of some viral infection and anemia.  No need to worry about leukemia. Consult your doctor and take treatment of your anemia. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health. </s>