Colposcopy while pregnant?

Stephanie • Graduated from Western Michigan University 14' . Successful and beautiful. Mom to a 9 year old son. Due 1/27/16.
My OB ordered one for me and I'm really nervous about it. I'm scared to see any amount of blood while pregnant and I know with them having to take biopsies from my cervix, it's possible. Has any of you had one while pregnant? Any advice on how to relax? I'm scared :/