I got a blood test done on march 29th and my rbc, hemoglobin, and hematicrit were high and my mpv was low. on april 7th i got another blood test and the results came back normal. could something still be wrong with me and is it normal for blood results to fluctuate??? I have had trouble sleeping, a low grade fever off and on, and i get tremors in my hands and i dont know how to explain this but i get tremors/ shakiness inside my body, what could cause these symptoms???