I am having the same problems and have just got out of the hosptial for it with same tests results. The only test evelated was dimer and lungs and heart test out fine. I've had these problems before. I was diagnosed with low IgG sublasses, the total count was in the normal range and I take IgG infusions for this and I have low alpha-1 which those transfusions have to be given weekely and so far the research isn't good. I rarelyt run a fever even when I have major infections because my immune system doesn't kick in as it should. I am currently takin an antibiotic, Levaquin even though blood counts for white cells are normal and I am feeling somewhat better and have more energy.