Freaking out... could it be cancer?

I went to the doctor a couple weeks ago and had my blood test and my white blood cell count is high. This is the third time they have retested it after rounds of antibiotics and it just keeps increasing. My doctor referred to me to a hematologist/oncologist. My appointment is tomorrow. I'm so afraid that I'm gonna be told that have leukemia or some other type of cancer. I Googled what types of disorders are associated with a high white blood cell count and leukemia seems to be most in line with my symptoms. I'm so scared. I'm too young for this. I'm only 24 and ttc. I'm getting married in October. I can't have cancer. I just can't. I'm not looking for anyone to diagnose me. Just need some support. 😓