High white blood count, female?

I had my blood tested several times with my PCP since November 2007. I also had bronchitis 3 times since then. The white blood count was always high (first in the 12's, now it is 14.2). He is referring me to a hemotoligist (blood doctor). I just want to know what could be causing it, besides leukemia, because that was the first word out of his mouth and I am scared now.