Hpv positive and borderline abnormal cells

Help. 

Advice needed. I had a smear test 1 week ago, results back already. I am positive for HPV and have borderline abnormal cells..... I have an appointment for a coloscopy in 19days. It's already been booked for me. I'm only 27, I am so scared. Dreading the worse. Do not know what to expect. 

Am I being dramatic or should I be worried?

Thanks xxx