Anyone had a cervical biopsy?

Rachael
I'm 25, had my first smear test which came back with abnormal cells and low grade HPV went to have a colposcopy today and they want me back 6/6/16 for a biopsy as a few white cells r showing and my body's immune system isn't fighting it off on its own. Has anyone else had this and are biopsys painful? I'm really really scared to death