Hi David,
Try not to worry at this point. They usually don't do much when someone has a WBC just below normal and not neutropenic . They usually put you in a watch and wait mode. Unless the doctor sees a lot of new white blood cells (blast) or if the differential count indicates something or if you have other symptoms (enlarged spleen). I assume your platelets are above the low-normal as well as your HGB. Are your neutrophils(ANC) in the normal range?
It's good to chart your blood counts so you can see the trend overtime like you are doing.
Definitely get your zinc, copper and iron checked. In addition to the B vitamins already mentioned, vitamin D & K2 are important. You can't test for K2 though.
Also get screened for h.pylori even if you have no symptoms. Disruptions in the gut can impact bone marrow. Medications can impact your blood counts too.
John was treated for bone marrow failure back in 2002. The reason why he has PN.
You may find this helpful:
http://www.bloodjournal.org/content/...o-checked=true
http://www.ncbi.nlm.nih.gov/pubmed/23771659