BLOODWORK RESULTS SHOWING CANCER CELLS

My 27 yr. old daughter went to her family doctor earlier this week. She has been having a strange headache the past month. Rather constant and intense. That is why she went to the doctor. The doctor ran bloodwork and immediately found out she was anemic. Then, the bloodwork was sent off for a more extensive exam. The doctor called my daughter yesterday with the results. The doctor stated to my daugter that cancer cells were found in her bloodwork. My daughter's other symptoms are extreme fatigue, aching joints, a full filling in her stomach area and no appetite. My daughter never complains unless she is truly sick. And normally she is full of energy. I am trying to be very upbeat and hopeful for my daughter's sake. But to be honest, we are very scared right now. My daughter goes back to the doctor Tuesday of next week for further bloodwork. And very possibly a CT scan.  Cancer does run heavily in our family. I am a 20 yr. cancer survivor. My father died with bladder cancer. I also had 2 grandfathers to die from cancer. My daughter did have a cancer scare about 6 yrs. ago. It was precancerous and of the cervix. She did have a procedure done to stop these precancerous cells. I had the same thing done to me many years ago. But, I ended up having cancer of the cervix anyway. I have been researching on the net about my daughter's symptoms, the anemia and the cancerous cells in her bloodwork. I keep coming across possibly leukemia. I don't want to make any diagnosis, as I am not qualified to do so. But, I am a mother and I can't help but worrying so. I do though know, that cancer cells showing up in the blood is not normal whatsoever. Any input would be so deeply appreciated. Please be upfront if need be, as I will not be offended. Thank you very much.