Has anyone had this happen before?

Okay so I went in to the doc Monday for my 29 week check up. They did a urine sample and said everything was fine except my white blood count was high. He said normally its 12,000 but mine was 22,000. So they did blood work. Got the results back today and he said that the white blood count hasn't came down any and they are referring me to an oncologist. Which is a cancer doctor. Has this happened to anyone and everything be okay???