Sorry for the troubles, but glad the pain was managed by the doctors. I needed a blood transfusion during chemoradiation, was 7.5 also, other times as well. That's from the bone marrow being compromised, which produces RBC, which picks up oxygen in the lungs, but there is not enough RBC being produced by the bone marrow, and also from them being killed off by radiation and chemo, quicker then they can be replaced.