I had bloodwork done in November 2016 and my WBC were 5.8 and RBC were 4.38. I also had high monocytes (8.7) and high RDW (14.9). I had bloodwork again in February 2017 and my WBC were 5.1 and RBC 4.0. My RDW has dropped to normal range at 13.0 and monocytes were not tested again. Should I be concerned or is this an insignificant change?