Do get the results from your CBC. It should have the WBC differential. It would be good to compare the current results to at least the past two+ CBCs to see if there's a trend. You should also request a b12, folate, b6, zinc and copper blood test if you haven't had one in a while. These nutrients play a pretty critical role in blood production. When you say low-ish platelets do you mean low normal, just below normal or pretty low?

I agree with mrsD to look at the medicines. Even Tylenol can effect your platelet count.