Hi Danab:
Your white count is a bit high but it's not really high. When I had diverticulitis my WBC was 20.4 that's really high. There are things that can affect your WBC. Inflammation is one of them, infection is another, some medications can make your WBC high. Ginny gave you a great site to look at. I'm sorry your appointment didn't go well. I hope your appointment on Friday goes well. Take care and good luck.
Hugs,
Barbara