Colposcopy biopsy results- 3 came back normal, 1 suspicious?

Hi all,

I had my 1st abnormal pap that came back CIN3, theb was referred for a colposcopy. Today they called and 3 of the 4 biopsies came back clear, 1 came back "suspicious" and they want to do a cold knife surgery. I asjed if it was normal to have 3 clear and 1 not, and he said not often. Should I get a second opinion, and what does "suspicious" mean exactly? Im so scared and unsure 

Thank you-