HPV Positive and Borderline Abnormal Cell Changes

Hi,

I'm 25 and have just has my first smear test with the results come back as being HPV positive with borderline abnormal changes. I've been referred to the hospital for a Colposcopy and I can't help but be worried about what they might find. 

How common is this? I can't stop overthinking and just in time for Xmas as well.